Hiho!
In Beta 2, when you set the cursor on a slot in your inventory (no matter wether there's an item or not) and you press SELECT, the slot gets emptied..
Hold the Select Button and you can swith through the Game items via the buttons L1 and R1.
Some items are no longer available or do not work.
Proof: (click to enlarge)
The left picture shows the inventory, as it is originally. In the second picture, I filled the empty slots with items and in the right picture I exchanged the First Aid Spray and Knife for other items.
On the pictures you can also see the no longer available items, which's slot picture is weird colored or just black.
Also the text for some of these items (Second picture) are too long for the textbox.
Translation by: Reon Sukotto Kenedi