"Full" Inventory bug(with pic)

Vahnkiljoy

So I ran into a major issue with the inventory, I have, going visually looking at my inventory 4 slots free for single slot items or ONE 2x2, but the game reports to me that my inventory is full, no matter what I do, drop/pick things up it will keep reporting a full inventory. Since it is impossible currently to bring up F8 with the inventory open, the only way to report this with proof is with steam pictures or good ol printscreen so here you go.