Product Version 0.77.109940

Rather important.

1. Choose your pistol, then launcher. Go crouch or stand up or step over and you will be switched to rifle automatically (not intended, I guess).
2. Now go in combat pace with your rifle and lower it. Try to raise it when you run (I can't).
3. Also you can't step over with launcher in crouch. I think it is not right because if you hit V with rifle/pistol you automatically stand up and step over. Since you can step over with launcher when you stand, what prevents you from standing up automatically?

Not so important.

4. Stand with your rifle, adjust it (Ctrl+W or Ctrl+S) and go to inventory. Animation is broken. Same when adjusted prone with this weapon. Pistol/launcher is ok.
5. Stand with your rifle, go to inventory. Drop your rifle on the ground (RMB). Protagonist will not change his weapon. Pistol/launcher is ok.

Little exploit.

6. When you open your inventory or loot something according animation starts. It makes you vulnerable because of anim transitions (I found it fare and realistic). But you can slightly move to end animation and be prepared to react in a case of danger while still lurking through loot. To prevent this exploit, inventory menu must be closed when player moves instantly, rather then when he gain some distance.