Hi there, I’m running a Paper 1.20.4 server with a large plugin stack (110+ plugins), and I’m facing a major desync issue related to entity positions after a player reconnects.
Issue:
When a player disconnects and reconnects:
Confirmed details:
My suspicion:
A conflict between packet manipulation and entity render plugins, or a UUID-related issue between Floodgate and Java/Bedrock hybrid handling during reconnect.
What I’ve tried:
Any help would be really appreciated. I’m open to debugging with test builds or disabling specific plugins if needed. I can provide dump links or logs as required.
Thanks in advance.
Here is a video where you can see the problem
Issue:
When a player disconnects and reconnects:
- They see other players and mobs in incorrect positions
- Mobs sometimes appear to teleport or phase through walls
- Players appear frozen or stuck to others
- Some movement appears rubberbanded or outdated
Confirmed details:
- TPS is consistently 20.0 (no lag spikes)
- Using Geyser and Floodgate for Bedrock support
- Packet-level plugins: ProtocolLib, Packetevents
- Entity/visual-related plugins: ModelEngine, MythicMobs, Citizens, LibsDisguises, Oraxen, ForcePack, HMCCosmetics
- SkinsRestorer is also active for offline support
- entity-activation-range and entity-tracking-range are set to safe/recommended values in paper.yml
My suspicion:
A conflict between packet manipulation and entity render plugins, or a UUID-related issue between Floodgate and Java/Bedrock hybrid handling during reconnect.
What I’ve tried:
- Reset tracking ranges
- Confirmed it’s not TPS or view-distance
Any help would be really appreciated. I’m open to debugging with test builds or disabling specific plugins if needed. I can provide dump links or logs as required.
Thanks in advance.
Here is a video where you can see the problem
- Version Output
-
This server is running Paper version 1.21.4-226-ver/1.21.4@a838a88 (2025-04-17T19:20:57Z) (Implementing API version 1.21.4-R0.1-SNAPSHOT)
You are 1 version(s) behind
Download the new version at: https://papermc.io/downloads/paper
Previous version: 1.21.4-211-6ea4202 (MC: 1.21.4)