Really annoying "Already Equipped" dialog box

[RCC_2000]

When I try to sell a mod that I own in more than 1 of the same mod and the mod is "somewhere" equipped I receive the dialog box "Already Equipped" 2 times! One time when I click on the mod and again after I confirm the amount. The problem is even more annoying when I try to sell the same mod again (in this case was confirmed after selling 2 of the same mods for 2 different players after 5 minutes) and I receive the double message again, implying that the mod wasn't really unequipped in the first trade. 

I hope this is not some kind of joke, and as I suggested before, please add some tag or overlay and make them separated from stacks so we can identify equipped mods.

[redFooti]

I'm trying to trade veiled riven mods and the box appears saying it is attached to a weapon. Ridiculous. This bug started to appear with 27.11 update, I think.