Its only a right hand door? , so it either opens into the room to your right side , or opens out into the hall on your left side (facing into the room)
And both ways do not have a wall behind when opened.
Plus this particular door looks to be only opening to 90 degrees from closed , therefore it couldn't be clipping into a wall if the hand was switched.
Do you mean the door header looks to be a bit low , so when its open you see that header sticking down through the top of the door?
Which the other door next to it does the same thing.
However you can adjust the size on the Reference window , 3D data tab. Changing the scale from 1.0 to .98 looks to be barely clearing it.
And to make sure it sits on the floor properly. Move it up slightly after resizing then drop to the floor with "F"
There will be a gap on top , but it shouldn't be noticeable in game , and maybe gaps on the sides , but I didn't notice any myself from in the geck.