Player displacement behaves incorrectly

[Express50]

When a block is placed on a player, the player is automatically displaced. In certain cases, this displacement behaves strangely.

Steps to reproduce:

1. Place a block on ground level:
   
2. Align player with block:
   
3. Place block on player

Expected behaviour: player should be displaced 1 block to the right
Current behaviour: player is displaced 2 blocks to the left

Note: player displacement seems to behave correctly when the player is not completely aligned with the block.