Unable to see blocks breaking

Problem - when breaking any type of block under you, the block appears to break without seeing the cracked animation. How to achieve: Stand on any block that will take you at least 5 seconds to break (so that you can see the result). Aim the cross-hair to the bottom-most part of the screen so that you are facing the ground. Break the block under you and you will hear it breaking but won't see the block cracking to break.