Failed jump is tolerated/Impossible movements possible

Steps to reproduce & Justification:

1. Player jumps, activates pressure plate and safely lands on the lamp.
2. If the player activates pressure plate, it means that the position of the player is lower than half block.
3. If the player landed on lamp block, it means that the position of the player is same or higher than a half block.
4. Step two and step three cannot happen at the same time but in the step one they are.

Note: It is possible to reproduce this with lot of different block location/player movement, but I fint provided example most simple and easy. It might be caused by slight desync between server and client.

Demonstration Video