Keychron PBT keycaps falling apart

Has anyone else had this problem?

The keycaps that came in with my K6 all keep slowly falling apart - one side of the base that slides onto the switch eventually cracks/chips/splits off.

They did replace two when I requested support (Q and W, and I am not even playing FPS games to use these keys too much) but few months later and now a lot more of them eventually started breaking (Left Shift, Win, B, X, 5, ...).

https://i.imgur.com/3fgPzii.png