Minecraft 16w35a, Minecraft 16w36a
Java 1.8.0 25 64bit
When mobGriefing gamerule is false, silverfish won't even move, although will attack when on survival mode. Most likely caused by the fix of
Code analysis by Neko:
The reason for this is the Silverfish first checks if mobGriefing is false, if so, the code returns false and the Silverfish cannot attempt to path find.