Tnt with Trapped chests

When you trigger TNT with a Trapped chest, the chest sometimes survives the TNT but it changes the direction. When it gets a block update it disappears though. The screenshot doesn't say much, so I recommend to check out the following video where I show you the bug:
http://www.youtube.com/watch?v=sKVDTOzei4M
For me it doesn't crash like in MC-5768.