All off-thread access issues...

[Harveykang]

Current Mitigations

• Level.getEntity(...), ClassInstanceMultiMap.*
  • (optional) Use ConcurrentHashMap + IterationSafeArrayList
• LevelChunk.getBlockEntities()
  • (optional) Use ConcurrentHashMap
• LevelRenderer.setXxxDirty()
  • Dispatch to render thread.
• ClientChunkCache.onLightUpdate()
  • Dispatch to render thread.
• ActiveProfiler.*
  • Skip if off thread.
• MultiBufferSource.*
  • Exception.
• SoundEngine.*
  • Dispatch to render thread.
• ClientLevel.players
  • Use IterationSafeArrayList