When entities go into minecarts, sometimes they clip into the ground or they can float above the minecart while still riding it.

Steps to reproduce:
1. Have an impulse command block with this code on a 10 tick clock

• execute at @e[type=villager,dz=-1,dx=-1,dy=1] run summon minecraft:minecart ^ ^ ^
  2. In front of the command block have a powered rail facing down like a ramp.
  3. place a villager 2 blocks above the rail falling onto the rail.
  4. The villager has a chance of being misaligned.