Ver. 1.9.4 Non-breaking Blocks

Blocks are not breaking when mining stone, coal, etc. with pickax and chopping trees with an ax. When mining the stone will "break" and then reappear, sometimes disappearing after roughly 5 - 10 seconds. Other times it takes more times to break it for one block to break.

Due to its size, I've uploaded a captured video of the bug in-game online:
https://youtu.be/U94wgweamSs