Hi Paul. My parents have a side-by-side in their garage. It does the same thing - you have to ensure to press the door closed firmly.

The issue is with the hinges of the doors. At the lower hinge,  a plastic cam underneath the door allows gravity to help the door close. The hinge rusted and became tight in my parents fridge and the cam either became dislodged or broke (can't remember).

I would check this if I were you.

To give you a better idea, here is a link to a door close cam. Note well I didn't look this up for your fridge so don't order it unless it happens to fit your model. :)   www.appliancepartspros.co...">www.appliancepartspros.com/whirl...