Now, I've seen this bug, where, at random, if you destroy a block, then that block just flys across the air. In Minecraft, when you destroy a block, that block just falls, yeah? Well, in this snapshot, the dropped block goes flying.
And, please, don't ask me to take a screenshot of this happening. It's just hard.
Duplicate of MC-47650 - If you have not, please use the search function in the future, to see if your bug has already been submitted. If you could not find the original report, please comment with the keywords you searched for.