BUG? Stuff staying on the floor even after you pick them up

[Meytar ♡]

So I put a book on the floor because I didn't have a space for it my bag and even after I picked it up and it went into my inventory, it still shows on the floor?
And I can't sell or get rid of it and it just takes up space in my bag..

Is this a bug? does it happen to anyone else? anyway to fix this?