Entity(ies) inside an extended piston base gets moved to front of the piston when the piston is retracting

Many people has experienced it. It also has broke many compact redstone contraptions and the most important one (ex. "MCBE 63 Blocks 3x3 Piston Door"). It should be fix by making the entity doesn't get moved to the front of the extended piston when retracting and stay inside the piston