Error when comparing a shield (sometimes?)

[hauzer]

Okay, so I thought this was a bug with some addon, but it turns out it isn't (I think?). I've reported the bug to the author of Better Item Description on Steam and he generously examined it. Gave him a save which contains the shields in question and he was able to reproduce the bug without any addons at all! The bug in question is simple: comparing a shield in the inventory (holding CTRL while hovering over it) produces an error, although it doesn't seem to happen every time. In this save it does, though. So, I'm not sure if an addon permanently changed something in the save and it's still erroring out even after disabling all of them, or it's the vanilla game genuinely bugged. Sorry if that's not the case. Better safe than sorry, I guess.