Same thing happened to us and had Ginger Beer all over the floor once wifey opened the door that she loaded....
Did you come up with a solution for the problem?
Glad I came across your pic.
For those wondering, that tit is a molded part of the door, not a clip in, not a glue in, an actual part of the molded door inner panel.
And yes my other side is cracking as well.
Just been without a middle shelf since Dec.
Thanks,
IrnBear