Playing on x64 Windows 8. Latest Java version, latest launcher on lan server. Will often crash while closing a door too quickly, or sometimes when breaking a block. Game freezes and becomes unresponsive, have to force to close it. No crash report is made.

Messed around with this and it's almost a 50 percent chance whenever closing a door too quickly that the game will freeze. Does this in creative, survival, singleplayer, multiplayer. Java freezes and when it closes the launcher reopens. Still no crash log generated.