Jumping from 7/8 block height block inside a closed Trapdoor and opening it during jump whilst shifting causes weird movement behaviour

Found this while jumping from various blocks upwards from inside an open trapdoor, closing the trapdoor mid-jump. From a full block this would result in the player standing on top of the now closed trapdoor, but from blocks like Brewing Stand, Soul Sand and Chest variants a strange you are unable to do so. If during the jump you sneak, your player starts shaking and is after a short moment slightly lowered and entered in the crouch mode. It is possible to very slowly move on top of the trapdoor but from a certain distance from the edge the player model starts switching between standing up and crouching in a repeated manner. Once the player stops crouching, the behavior stops and the player falls through the trapdoor.