When you face directly/straight down or up, the cracking animation/stages glitch's. This happens to me 90% of the time, and it is not a graphics card problem as it has been tried on multiple different cards.

What I expected to happen was...:
The cracking animation/stages to appear.

What actually happened was...:
Instead, the animation/stages either flicker or don't show at all.

Steps to Reproduce:
1. Stand on or below a block.
2. Face directly down or straight up.
3. Start breaking the block.