The coming Calamity

Same thing happened to me... what a waste of Gems and divs. now I have 3 coming calamity all becuase I thought it disappeared.

I believe I've figured out how the bug works. If you have this chest piece with 4 skill slots, you can only fill 11 slots. If you try to place the twelfth gem, it will trigger the bug when entering a map, hideout, etc. I lost a lot because of this bug.