Windows 8 64-bit
Java SE 8u20
When you start breaking a block and then hold down right-click to eat, the block breaking remains on the block and when you stop holding right-click and start punching the block again, it continues to break (IT DOES NOT RESET THE BREAK, IT CONTINUES WHERE IT LEFT OFF)
In previous versions you were able to eat and break at the same time without the block break pausing.
Steps to reproduce:
1.Make sure your hunger is low enough so you are able to eat
2.Find a block and start breaking it
3.Hold down right-click to start eating
4.Hold down left-click and release right-click
This also works if you start breaking and then block with a sword.