In Minecraft Windows 10 Edition Beta, I was about 5 or 6 blocks away, flying and when pressing the break block button (right on mouse) it 75% chance did not show the breaking animation (the hand punching) but the block broke.

Steps to Recreate:
1) Open MC Windows 10 Edition
2) Create a new World
3) Find a Hill (any kind) a fly about 4-6 blocks away from the block you want to break (make sure you can break it)
4) Without moving (you can move your head but not yourself) break the surrounding blocks, and 75% of the time, the animation will no play

Please Upgrade the file size Limit to 30 MB because the file I have cannot be uploaded (25.44 MB)