Piston destroys images and item frams if retracted

Steps:

1. Place a image or a item frame on a block
2. Place a piston in front of image or item frame
3. Power the piston
4. Let the piston retract

IMPORTANT: I know that the item fram will be broken if a block is in front of it. But if you retract the piston the item frame will be updated somehow and breaks always and immediately and not after a random time span.