Every time when you use a piston or sticky piston to push or pull a block, it will start to glow for a second and then back to normal. This apply to any block that be push or pull in the game.

Steps to Reproduce:

1. Create a New World in Creative Mode.
2. Grab a Piston or Sticky Piston from inventory and any block that can be push.
3. Use a block of redstone to activate the piston or sticky piston and you will see that it glow up for a split second.

Observed Results:
Block glow up for a split second when push or pull by a piston or sticky piston.

Expected Results:

Block shouldn’t glow up for a split second when push or pull by a piston or sticky piston.