The Bug

When intersecting a collidable block, the player will automatically be pushed in a given direction to stop the intersection - either to the side, or downwards. However, no attempt will be made to push the player upwards regardless of any available space.

How to reproduce:

1. Place a horizontal "plus" of (ice) blocks with the middle open (see screenshots)
2. Stand in the middle and run this command:

   /setblock ~ ~ ~ ice
   

   → Notice how you're not pushed out of the block

1. Now break any of the 4 initial blocks on the outside
   → Notice how the block in the middle now pushes you out in the direction of the block that was removed