This can be used to be like hey my items gliched can i get them spawned it
Its just a visual bug. The icon loaded in after you moved the item so it put it there.
Sorry Welton you're going away for a long time...
If you do find a actual dupe contact it only to brass
He reported this to me directly, I forgot to respond to it (because of how minor it is), apologies.
It's just visual my dude, nothing serious.