Heavy Belt disappeared after using Orb of Chance

Hello, i have Heavy Belt items in my inventory. I had an orb of chance in my stash currency tab. i dragged the orb of chance onto the heavy belt, and then the belt just disappeared. i only have one now, but the orb of chance is gone, and the belt is no where in my inventory or stash.

That is how Orbs of Chance work in PoE 2 - they either change the base item into its unique variant, or destroy it. Not a bug.