A Rare Minecraft IMMORTALITY Exploit Was Just Discovered...

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.

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

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

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.

@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 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

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.

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

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.

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

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!

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.

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

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 love how Australia was partly the cause for an unexplainable glitch