[09:48:18] [User Authenticator #1/INFO] [net.minecraft.server.network.NetHandlerLoginServer]: UUID of player PlayerName is 54812f4c-0954-4c8d-8a9e-0c76d5c50189
[09:48:18] [Server thread/INFO] [net.minecraft.network.NetHandlerPlayServer]: PlayerName lost connection: Internal Exception: io.netty.handler.codec.DecoderException: java.io.IOException: Bad packet id 9
Cannot join game
Expected Behavior
Should be able to join game
Current Behavior
Get disconnection error when joining
Possible Solution
v1.5.4 works fine
Steps to Reproduce
java -Xms32G -Xmx32G -d64 -server -XX:+UseG1GC -XX:+ParallelRefProcEnabled -XX:MaxGCPauseMillis=200 -XX:+UnlockExperimentalVMOptions -XX:+DisableExplicitGC -XX:+AlwaysPreTouch -XX:G1NewSizePercent=40 -XX:G1MaxNewSizePercent=50 -XX:G1HeapRegionSize=16M -XX:G1ReservePercent=15 -XX:G1HeapWastePercent=5 -XX:G1MixedGCCountTarget=4 -XX:InitiatingHeapOccupancyPercent=20 -XX:G1MixedGCLiveThresholdPercent=90 -XX:G1RSetUpdatingPauseTimePercent=5 -XX:SurvivorRatio=32 -XX:+PerfDisableSharedMem -XX:MaxTenuringThreshold=1 -Dusing.aikars.flags=https://mcflags.emc.gs -Daikars.new.flags=true -Dfml.readTimeout=90 -Dfml.queryResult=confirm -Dlog4j.configurationFile=log4j2.xml -jar "Mohist-1.12.2-8f280f9-server.jar" nogui
Log
Detailed Description
My full configuration can be seen here https://github.com/TeamJoe/MinecraftStuff/tree/master/pdx-004/home/minecraft/data/ATM3