Blocks not disappering at once

Put the summary of the bug you're having here

What I expected to happen was...:
Blocks disappering at once when I mine them

What actually happened was...:
Blocks remained on screen until I turned away and back, or
waited a few seconds

Steps to Reproduce:
1. Mine a lot of blocks very fast
2. ...
3. ...

Can occur when placing blocks (block does not show up at once)