Switching out weapons and/or ancillary gear in inventory only works in one “direction”.
IE, you can switch fine if you click on what you want to switch to in your backpack first, and then click the equipped item you want changed, but not the other way;
IE(2), if you click on the equipped item first, then click in the backpack for what you want, nothing happens, but sometimes you get a brief little “buzzer” sound. The sound only seems to occur with ancillary gear but not with weapons.
Re-production: Try switching out as described, Equipped item —> Inventory
Work-around: Dragging-and-dropping seems to work in both “directions”.
If this is a bug, then it really needs fixing because it’s just ■■■■■■■ maddening.
If this is a feature, then it really needs to be demoted back to not being one, like, immediately.
(sarcasm) Oh, before I forget: (/sarcasm)
Have I mentioned just how ■■■■■■■ grating this is, especially during a pull where multiple elements need to be accounted for (four slots at a time only goes so far, especially if you’re using those pulls to “field-test” multiple new weapons or a new build.)
Fix this? Like, sooner than Soon™?