This is the same error when standing still and the door will go through you.
You can detect that the player is on the platform using a trigger or something and then move the characters position up. Use a kinematic body for the platform.
Im not on the dev PC atm, but this is something we have wanted to build for some time.
Some games, don't even allow you to move around in the elevator as it moves as the Y position of the characters are coded to give the correct feel. Look at the original mass effect.
However, we still need to apply a force in the character when something presses against it to move it out of the way instead of going through it.


