Just happened to notice a blank item in my inventory marked as 'Not Tradeable' in red text. As far as I know, it wasn't there the last time I checked my inventory yesterday or the day before. It can't be clicked on or interacted with, other than locking the item. It does not appear in Quick Stock, so I have no idea how to remove this item.

Thank you for the info! Artist copies for were approved/deposited into my account within the last couple of days, so perhaps there was a glitch with one of those while you were trying to wrangle the queue issues. (I have copies of both safely stowed in my wardrobe though, so I'm not technically missing anything, btw.)

If you or need any more info from me, I'm happy to help. ^_^

can you do us a favor and lock the glitched item in your inventory? This will help Bug find it easier!

Done! Apparently there were two (stacked). They are both locked now.

They should be gone from your inventory!

I can still see them locked in my inventory. I'm currently working on something but I'll try clearing my cache later and see if that does the trick. :)

Can you check again? Bug deleted another one XD

That appears to have done the trick! Thank you for all your help. :)

Hooray! I'll go ahead and lock this up :)