Help me get to the bottom of this exploit, first person to replicate it gets $100! (instructions below) 1. Join my server og-network.net (Bedrock players can join with port 19132) 2. Record a video of you consistently replicating the bug, and upload it to youtube unlisted. 3. Post it in my servers discord - discord.gg/G7zq6NPZnM

The invisibility is probably due to the server not sending the player info packet to clients on the server. If the server does not send this packet players won't appear on the tab list and all players in range will ignore Incoming packets that relate to that player. This causes players to appear invisible.

8:14 for me being an active player, i actually ended up witnessing this when i was playing on windows xp (as an experiment at the time). i didnt really know that it had some associations with this op glitch, but it could of been possible that i was in this glitch state while i was afking without me even realizing it.

I recognize this. This is one of the things that was found while me and a few friends were experimenting a private server designed for testing for the Live Overflow SMP server. It’s simply an issue with the order that the join packets were sent, and I guess this can occur on bad connections sending smaller packets seconds quicker than larger ones. I don’t remember the specific order but it shouldn’t be hard to find if one were to make a mixin for the network handler.

This sounds ridiculously powerful, hopefully there's some way of figuring out what causes it and a way to fix it soon

That is a worryingly dangerous bug, I hope you can find a way to fix it. It is also worrying to think if it worked on other servers, I guess as of now we have no idea. I would try to recreate the bug, but my computer isn't laggy enough, so I don't think I would be able to.

@TheMisterEpic As a Java & MC Plugin developer, the reason is probably due to the PlayerMovementPacket and other PlayerDisplay packets not being sent to players. Likely an issue with protocollib. I suggest getting a packetlogger and seeing what appears in the logs as well as updating protocollib and all other plugins. If I can get packetlogs or src code of the custom plugins I can check for bugs. Not 100% sure it is a custom plugin error though. The cause is probably due to the order that the join packets were sent due to packetloss, and in a normal up to date paper server with no bugs this should not work but protocol lib is probably doing something. Not 100% but if you want to replicate it, I suggest sending the join packets in a different order via a mod.

This bug can be similar to the imortal bug in 2b2t many years ago, which was caused by a lag machine.

Sorry for the awful particles LOL! Great video! This is very interesting, oh well time to get bugtesting I guess. I really want to find out more about this and help find out how to replicate it consistently.

this actually happened on the hermitcraft server, grian was just playing and other members couldn't see them, couldn't hear them from the voice chat mod, couldn't see them on the tab list

It also appears that the problem at hand is related to the order in which the join packets were transmitted. It is possible that this issue may arise when a weak network connection sends smaller packets at a faster rate than larger ones.

That is such a weird and rare glitch and it makes you so OP. Hopefully we'll find out what's the glitch and it won't happen again!

i like when you do updates about your server, makes it feel alive.

there are some crazy glitches out there... but this... this is very intresting. I hope you can find out exactly how this happens and i also hope you're able to fix it. good luck

This sort of sounds like the Godmode exploit that happened on 2b2t a while back. No idea what was done to patch it though, just thought I'd mention it.

this kinda reminds me of a time when 2b2t players managed to create a lag machine that made people near it have there hitboxes removed. this only occured once from what I know and It couldn't be explained

I had notices a similar glitch in 1.18 server (Java) where I would go invisible . But I wasn't immune to damage (probably) .

I was getting this glitch consistently like every other login on a vanilla server for a decently long while around 2 years ago and another time I got it constantly when joining a rather laggy Rift server on a snapshot I had made at the time for modded survival so I think it may be a Minecraft bug and not a plugin bug.

I think it might be due to the connection failing during some important stage of connecting with the server or while playing. This makes sense in the connection with the lag machine on 2b2t that also gave invincibility and invisibility.

2:30 -- The particles are probably made like this to make it easier to spot invis players in BW/SW. I used to do the same and it does actually help to spot the players!

I had a 1.8 survival server and accidentally had this happen a few times. We tried to research it yet found nothing on google similar. All we could figure out is it had something to do with chunk loading, because it always initiated on a chunk border.

I love how Australia was partly the cause for an unexplainable glitch

This happened to Grian in Season 8 of HermitCraft, I believe, as well as a few other people on the server. From what I remember it could be fixed server side by going through a Nether Portal.

I had this happen a few years back, I was on a factions server and raided a base, killed them all without being hit and didn’t think anything about it until they complained about dying for no reason without seeing anyone

Something similar actually happened to me before playing on a friend's realm. A friend went to the spawn to show me something, but when he was right in front of me I didn't see him. Similar to what you showed I couldn't damage him, but he could hit me. However this is a realm with no plugins and this glitch still occurred and I was told that he would experience that glitch sometimes on this realm. I'm not sure how it works, but I am confident that it's not the plugins thats causing the problem since it has occurred on a pure vanilla server.

That weird arrow falling animation happens on mcci sky battle sometimes, hopefully it doesn't cause issues like it did for u

Okay ToggleXYZ is legit amazing. They discover a game breaking glitch and their immediate reaction is to inform the owner, test how it works and its limits instead of abusing it, and try to figure out how it happens with the staff so that it can be fixed. Truly a chad player right there.

So this reminds me a LOT of something i used to do sometimes on a factions server i used to play on. I had in my custom client a mod i made called c-lock Or client lock. It would essentially halt the entire clients process. Sort of similar to the old trick of right clicking on the window bar. After about 30sec of your client not sending any packets. (or specifically the keep alive packet) the server will kick you. I found that if you locked your client. Then changed IP addresses. (easy to do in places like Australia with dynamic IPs) force kill minecraft. Then reopen and right away reconnected. A good portion of the time you would get a similar pseudo invis. It was as if the server was somehow confused about which IP you were actually on. Sending some of the packets to your original one. And some to your new one. You had to do all this within 30sec before the server registered that you timed out and kicked you, otherwise it would not work. No idea if i still have a compiled version of that mod anywhere. And it was written for 1.8 (yes i mean 1.8 from 2014) so prob couldnt connect to your server on that old a client anyway.

What this reminds me of is a bug first discovered on 2b2t which was originally just a really big lag machine but the players who made it found out that it created soo much lag that they would go invisible and would have their hitboxes removed from existence but the lag machine created so much lag they had to turn it off or they would be banned. Edit: Theirs a video on FitMc's channel ( A 2b2t Historian famous for the saying "ON the oldest anarchy server in Minecraft") covering a machine that granted players immortality and complete invisibility.

This reminds me of a bug on Hermitcraft. In season 8, Grian logged in, but was completely invisible to Mumbo Jumbo. He proceeded to tease and prank Mumbo, eventually spawning a Wither in the base they shared with a few other people.

There's always more bugs to find that can see and take advantage of

This is just tick tock clock all over again....

I have experienced a similar bug. Basically, after a server reload, i couldnt be hit OR hit anybody. I could also fly while hitting in the air. The only way for me to hit or be hit by other players was projectiles. I wasnt invisible, but i found the similarities quite interesting. The reason for this was a bug with mobs and essentials(i used F3 + B to see the hitboxes and then logged on with wurst with truesight).

from the sounds of it, it's actually a vanilla bug, since people have been able to do it for a while, and on many servers it's just due to having some packets sent at the wrong order, the server forgets to send that invisible player's info to other players, so their clients ignore any data relating to it (because why would they accept data for a non-existent player, in their view) some people claim they could do it rather consistently 2 years ago, even, and others have found it more recently it's happened to people trying to exploit minecraft for a server that requires exploits to even be playable (for fun) it's happened on hermitcraft (to grian) I kinda doubt that EVERYONE was using a common plugin...although it is also very possible...but if it is a common plugin, then that protocollib may indeed be the culprit

I may have had a similar (or the same) glitch before. I was playing on LAN with one of my friends, until my internet went out for a few seconds. When it came back, I was completely invisible, even in third person mode. I couldn't be damaged and could damage other players. It didn't go away until I restarted the game. I don't know if it's the same, but I just put the idea out there.

My guess is that it isn't plug-in specific, but that it has to do with the lag spikes more. If you try to join the server during a lag spike, you might be joining the server at the exact millisecond that you "time out", which would be why you don't get listed in the server list is because the server thinks you timed out, but your client thinks you made it in, so it lets you interact with everything.

Good thing he reported it instead of abusing it lmao

i swear bro themisterepic has the weirdest things happen on his minecraft server specifically

What I think is going on is when you join the server your computer and the server have to communicate sending packets to each other, and what could be happening is that part of the packet somehow gets lost and doesn't make it so the server has to make up for any lost data thus putting you in that semi-invincible state.

I think this absolutely has to be lag-related. FitMC made a video a couple years ago about 2b2t players accidentally achieving this same state by using a massive lag machine, although it could not be successfully replicated

I’m glad you’re exposing the glitch, I’ve been using it for years and whilst I do love it, I think it’s only fair the people now know.

You could probably do that reliably if you have a Programm that intercepts minecrafts packets and filter the packet that announces to the server that you joined or something like that

I may have experience this before without realizing it too. I couldn't do any commands and it wasn't saying "invalid command' or anything. I assumed it was lag.

I love how unique your videos are! Keep up the great work, man. You are the reason Minecraft content creation is so good. ❤️

A player sends packets to the server, the code to the server may have a bug to sending certain packets when having bad internet, thats why the invisible glitch works, it works because the missing packets aren't being send to the server.

this bug seems familiar, this happened before on 2b2t when some players made an incredibly large lag machine, but this time, it didn't log them out, it simply made them invincible and also invisible, maybe the lag has to come from the server?

6:40 the power of bad internet should not be underestimated

you have to admit its nice that that guy told you whether or not he was trying to flex or if he was reporting a bug

this is a prime example of the difficulties of async coding, its most likely the protocol lib as it changes how most packets are handled, the cosmetics are seperate from the player entirely and only need to appear at a location so its unlikely that. There are tons of issues like this present my favorite is from vanilla minecraft and thats being able to convert any block into a falling block in vanilla

I experienced something similar in a private bedrock server with my friend and I. It was probably due to connection issues, but it was basically the same. The only difference is that the “god mode” would just randomly turn on and it would be like a ghost left the player’s body, where you are playing as the ghost. No other entities move on your end, but you are still in the server. My friend killed me on his end, picked up my stuff, but I was very much alive on my end, and he was frozen in place like time had stopped alongside all other entities. Whenever I tried to break a block, he could see the breaking particles but the block wouldn’t break on his end. I wanted to experiment on the glitch more but because there was only two of us we had done basically all we could do. It is fixed though by logging back in into the server. I think these types of glitches are some kind of internet issue but the same type of ghost mode or time stop mode can happen in vanilla with no mods which is interesting. Not as broken as the glitch in this video though but thought it was relevant enough to write a comment about!

That glitch happened to Grian as well, on Hermitcraft server. He was for some reason invisible to Mumbo, and being the troll he is, he decided to troll Mumbo :D

This exact thing happened to me the other day actually. I was using a boat on a wide ocean.

Another banger documentary from the one and only TheMisterEpic!!!!

My friends and I found this bug on minehut a couple months ago. If we would have one client in a world and we attempted to join with another client running simultaneously, the second one that was joining would get kicked but the first one would effectively get vanished and have all the effects that you described in the video. It worked on some worlds consistently but not on others, we think it had something to do with the version the world was hosted on. It works in the lobby, one way to easily tell is that your skin reverts to an alex in your inventory

It seems to be a PlayerJoinEvent or join packets problem, sometimes if there are too many PlayerJoinEvent listeners, it may skip something some things, my best workaround on Spigot API is to have only one or two listeners on a plugin and have activation called from a separate classes. Issue Idea: There may be a certain time that on joining, too many things are happening at once not letting the server register the player. For Example: There may be the Permission Tag Generation for the TabList + Cosmetics loading + Generating Chunks and so on.... Another fix I did in a Velocity plugin to stop skipping, was to add a delay or have (in my case Velocity API) activate on a later stage of the listener, I did this to allow loading of Tablist to not be mixed up. Another Issue Idea: On the Chunk loading case, there may be multiple people joining at once and people moving to load chunks putting a bit more pressure on the server to send chunk packets which may end up skipping packets or listeners, this may cause player data to not correctly save on the server making the player kicked out, makes sense for high ping scenarios since that's usually the case due to slow data transfer/connection. Resolution Idea???? Update plugins to work together and make them not send so much at once or collect so much at once, maybe add delays, maybe even make a plugin library to allow the plugins to talk to each other for packet sending and synchronization of events. This is based on my knee-high-in-the-pool experience on plugin development, I hope it helps generate ideas and stuff. Other Ideas: Proxy to Server talking????? Proxy packets????? Proxy Effect + Server Effects Overlapping????? Proxy Packets + Server Packet interference on player data????? Mojang verification packets colliding with Proxy-Server verification packets??????

imagine when the first person to figure this out just decides to be a villian and exploits it

The fact that you lose your skin makes me think it has something to do with offline mode, like you have already been accepted into the server but you don't ping mojang. Like how cracked servers work.

i find it hillarious that DaMisterEpic only has a rep of 1 lol

Lag machine in tb2t? There were a group of players in 2b2t who built a lag machine but caused the nearby players to become invinsible and invisible. Very similar.

Minecraft is going to become THE purple playground soon.

Remember when this happened on 2b2t? Fit made a video on it and it was due to a red stone machine so idk if it is different. However, when the players got kicked from the lag they were visible again so it could be similar

8:14 sometimes i get that message when i leave my pc on overnight with minecraft running. idk if that info helps at all, but it might

I will try the bug on a private server with limited specs with the plugins you mentioned. We'll see how it goes

I remember something like this happening to me in VRChat once, but never in Minecraft.

My hypotheses: 1. You time out. And you log back in, but the "connect" packet is dropped. 2. Some plugins may only trigger a login when receiving the "connect" packet. 3. The server handles the dropped "connect" packet well on a reconnect. 4. Or maybe it's just a race condition, lmao.

This happened in 2017 on 1.10. Player could not die to the void though. Player data was corrupted by an improperly optimized script that messed with player data on login. Combined with lag this can happen. Any plugins that modify packets could be the cause, but check your player data writes. See if their is corruption.

Maybe it's a glitch with the connection, like when you connect, the server thinks you never joined and then you get into a 'connected but disconnected' state. Connected so you can see the server and send messages but disconnected that no one can see you or attack you. A similar glitch did happen in 2012-2013 (search it up) so maybe it's related.

what vanish plugin u using? I want to use it for my server

I believe I saw a FitMC video where some people on 2b2t accidentally created this bug when creating a huge lag machine, and they were never able to replicate it.

It's a network issue with vanilla minecraft. Minecraft doesn't know that you're on a server and doesn't take any instructions from the server end. The player is detectable by the server (hence why your cosmetics plugin still worked, and they could take damage from world instances , and probably hostile mobs as well.) However the client isn't telling the server that your player is online so the server doesn't send their information to other players. A simple way to solve this would be a custom plugin that will detect these variables and automatically kick the player, forcing their session to be reset. It's similar to the creative mode bug where you could join hypixel while in creative mode from singleplayer. Hypixel could detect this and alot of players were getting false banned.

7:55 what if someone gained access to your minecraft account, you dont have any like lock to only be accessed from ur ip?

I had this happen on minehut servers before, usually with 2 instances connected. Instance #1 is connected to the lobby while instance #2 is connected to the lobby, and uses /join. Instance #2 is immediately kicked back into the lobby saying "you are already logged in this server". Instance #1 however is sent to the server that instance #2 tried to join. Sometimes instance #1 is invisible on that server. This seems to happen on any minehut server, even a fabric one with no plugins. I thought this was just a minehut thing, or even a bungeecord/velocity thing, and it's very random so I didn't think too much about it.

I remember Fit Mc video that several people in 2b2t discovered immortality glitch

This could be potentially be a lag issue with the server. This happened on 2b2t where a lag Machine was built so powerful, their hitbox completely disappeared mid-game. Another supporting reason is that the server only uses 1 core, since that causes lag, the same 2b2t exploit occurs. My best guess is to build the powerful lag Machine in question to try to get results.

I'm pretty sure this has happened once or twice on hermitcraft as well

This reminds me of something FitMC reported as happening on 2b2t as a result of a massive redstone lag machine.

I love how you give the daily news

Can you place or remove blocks and get them in your inventory?

“I need to get to the bottom of this before powerful players abuse it” Uploads a tutorial to KZfaq. Nice.

The relief I got with it not being the same glitch that fit covered awhile back 😅

Looks like the firework prices are gonna increase in the market 💀

There have been so many of these server bugs recently

"An even playing field. NORMALY"

my theory is especific packets are being dropped such that the player goes on a limbo state

This reminds me of the old bug in the legacy console editions for the battle minigame.

pretty ancient bug that happened to me a few times when I had 2mb/s net

I once had a bug on your server where the damage was so delayed that with a single totem I could win every fight but I think it was a one time occur

I think this vanish glitch could be client side and not server side, because to me the detail that it can happen while you are on the server, tells me that the game tries to disconnect you, and somehow fails yet succeeds at the same time, as if something stopped the kicking process in the middle of it. Or it could be a mix of both client and server being I have seen comments mentioning player packets. These are just theories though but they make the most sense to me being the server does not give off any errors, and I feel like a player packet issue purely server side would send some sort of error into the server logs.

This reminds me of the death godmode glitch that got patched aaaages ago, you'd die and just set your health back to >0 on client side and then you'll be fine to attack, place blocks, grab items from chests, break instaminable blocks, basically anything as if you were alive, however people could not see you.

One day I kept getting this bug a lot on the server Diamondfire, it was back in 2022 when I had really bad wifi and my parents were watching Netflix so they used about 90% of the internet speed leaving me very little of it and it was pretty much unplayable, so I tried to switch to my hotspot which was better than my wifi and I joined the server, and couldn't use any commands (I wanted to use a command to get to a minigame I was playing) I did that multiple times but it was still happening.

did you try to slash kick the one effected? (mostly to see if they can be targeted by it)

FitMC Viewer : " Hey, i've seen this one before. "

I think this is a very specific set of events happening at the same time: 1) The player is on a poor connection (doesnt have to be switching connections) 2) The player is trying to login but the connection is so poor they have to try at least 2x to login (from timeout) 3) Once the player does load, the lag they experience logging in isnt the player experiencing lag but the server trying to load plugins while the player is actually timing out at the same time. This could be why the aesthetic plugin can load but the player model doesnt Ive tried to recreate this but somehow my connection from NZ is better than your connection shown on the video, even on my hotspot. The only thing I can suggest is to try and send a large amount of packets to yourself via cmd/terminal while attempting to login. You can set this for a variable amount of time so you can give yourself a testing window. You will have to play around with the volume of packets but of course the goal is to produce as much lag as possible on your own network that you can still login but not timing out indefinitely

I can confidently say it is ProticalLib from experience I have had on my server and another one. It seems that when the client has a bad connection to the server and "Lag's out" of the server, not all of the player's packets are unloaded, so when the player is able to reconnect, the server doesn't receive all of the packets since it thinks they are still connected and that's why when you disconnect while it's happening it will fully unload the player packets and "fix's" the problem. That is my current knowledge on this sort of issue

I had this glitch in vanilla Minecraft a few months ago and I did not know how it happened.

Since you can't use commands while in this vanish mode, maybe make players require to type a certain command to be able to play on the server? Like to enable pvp or something

This has happened to me before, probably because the server I was playing on was running on a crusty laptop.

this has actually happened on my small smp server aswell, its super weird

This is the most game breaking glitch I've seen so far. I wish I can help but my internet is stable at best on US hosted servers. The worst it can happen is lose complete connectivity to my own interne which can happen in my region due to almost constant winds.

Amazing video! Keep up the great work!