I've got a similar problem, I earlier added [Category] == "Weapon" && [Rarity] == "Rare" # [531] == "1" && [stashItem] == "true" to my active pickit file. (531 is the mod index for + to gems, taken directly from the dump of such an item) When I did this it started to stash every single rare weapon, no matter the stats, if I disable the line it starts to sell the non-matching items like normally again.
are all stashed for example