Bookshelf voiding bug

[MrHishprung]

Description of Bug Experienced:
The vanish of the bookshelf fixture if player's backpack is full. It does throw away some of the items from inventory, but the fixture doesnt appear in it afterwards resulting the fixture going into void will all the books inside.
Steps to reproduce the Bug:
1. Fill your inventory.
2. Pickup your bookshelf fixture using -pickup_fixture
3. Some items will drop. But thats it!

Expected Result:
Items are ejected from inventory backpack and in its place bookshelf fixture and its contents go in these slots.

Actual Result:
1-2 items dropped, bookshelf fixture and its content vanishes without way to recover it.