Reported on CurseForge:

XboxControllerTV
April 30, 2023
Comment # 5986491

this addon does great but ive found an issue in classic were it blocks a popup that should noit be blocked. when going to equip a BoP item that is still tradeable, the addon blocks that popup making it impossible to equip the item. below is a screenshot of the popup it blocks erroneously.

The updates in versions 20.3.0 to 20.5.0 should have fixed this problem, but I don't have a way to test this in Classic.