placing gravel/sand ( or breaking the block underneath ) to make them fall makes the entity to fall higher than its correct hight

When I placed a gravel block in midair, the entity seemed to appear the block above the one it was actually placed on. Also tried with sand.

What I expected to happen was...:
I place it and the entity would appear there too.

What actually happened was...:
I placed it and the entity appeared one block above

Steps to Reproduce:
1. Put a sand or gravel block in midair or on a block then break that block
2. See how the entity appears one block higher
3. ...