Breaking an entity that instantly breaks in Creative sometimes destroys the block behind it

The bug

Sometimes, when you hit a minecart, boat, item frame, painting, or armor stand in Creative mode, the block behind it is broken as if the attack phased through the entity. The said entity still disappears as normal.

How to reproduce

Summon said entities and punch them in Creative (make sure you're not holding a sword). The block behind the entity should occasionally break as well.

Code analysis

Code analysis by Marcono1234 can be found in this comment.