BannBann/Catacomb-Snatch — comment on commit e766dbdee8abe71dc5bec1413a713124fb4092e4
File: src/com/mojang/mojam/entity/building/Harvester.java line 75
By Technium:

This will break multiplayer sync. See Jeb's tweets. The proper fix is to move all calls to synchedRandom out of render and into tick.