this is one area that requires, at least ME, to see it and find out if its off its track to speak of.
Most doors are on a verticle axle on both ends, the door rides up to open, then it has to fall back down to close on its own.
The axle or hole might be damaged. Has the refrig been dolied from one area to another and dollied from the door side?
You need to experiment around with the door. Find out what is working RIGHT with the other door and duplicate it with the WRONG door side.
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