I will try to get a video if it when I get back to my computer.
Well. It stopped happening once I relaunched the client.
They need to fix the search for the issues...
I search and did not find that.
The bug only affects the snapshots and is still here in 14W30c.
I know what is the cause bug it won't help really. It happens to be in the actual code that goes through the blocks to find the blocks that are destroyed but the problem is unclear but seems to be a change there. (notice I have been digging in obsufcated code for days trying to find what changed. Just so you know.)
I will check if this affects the current snapshots