The bug

I've found a problem with removing villagers (tested with cows, zombies and creepers) from mine carts, when they leave the cart they end up outside the area I wanted (1x1x2) and escape (it is repeating).

How to reproduce

1. Dig a 2-block-deep 1x1 hole
2. Dig an identical hole one block diagonally away from the first hole
3. Stand in the first hole and run the following command:

   /summon minecart ~ ~ ~ {Passengers:[{id:villager}]}

4. Destroy the minecart
   → The villager is ejected into the second hole

Expected result

The villager should remain in the first hole.