My apartment has a very slanted door alignment. There is a good 1/2-3/4 gap on the top of the door. I personally can feel air blow out of it when we have all the windows closed and air conditioning on. It does not help when I live in hot California and can’t keep my cold air inside. (We have a reef hanging on the door. That’s what is in the middle…ignore please)
A reef or a wreath?
Reefs are pretty heavy, it might have pulled the door askew.