Put the summary of the bug you're having here
What I expected to happen was to see the fence breaking
Describe what you thought should happen here
What actually happened was a crash of minecraft
Describe what happened here
Steps to Reproduce:
1. I explode some dirt with TNT
2. I had breaking a fence when a kind of sky appeared
3. The launcher appeared with a message of crash
Can't reproduce. Breaking a fence doesn't crash the world. Crashes today seems to be all related to item frames.