I see, it's fine.

Unfortunately that is not a bug. I've got no modding experience but the code updates the item pedestals as soon as you enter the room so unless there's a way to preload the sprite (which again, I've got no experience actually modding) on rare occasions you might experience a split second where you see the question mark. The more mods you have on the more likely you are to see this delay.

There is a small bug that causes that in the variants of the alternate floors (dross, ashpit, etc) there is a millisecond in which the item is seen with the question mark.

Thank you!

Good job!