A weird question. I've got an odd thing going on.
On mouse-over, you can see if you've not unlocked an item's appearance for transmog yet yet. And only from your own armor type.
But two of my characters seem to have a different thing going on.. On mouse-over they show if I've not collected an item yet, regardless on if that class can use it. This seems useful, but it also shows me if the item I am looking at is an alternative source of an appearance I have already unlocked, using a similar looking item. So basically, when I scroll through the auction house, on some of my characters, a lot of items keep being uselessly marked with:
"You have collected this appearance, but not from this item".
I am not sure why it does this on some of my characters, and not others. And if there's some kind of toggle for it I may have accidentally pressed.
Does anyone have any sort of insights for this?
Edit:
Just to confirm. It does this for items with the exact look and color that I have already collected, through an item with a different name, but identical appearance. It does this, even with all addons disabled. Screenshot posted a few posts below.