- Pick up a one-handed melee weapon (machete or hammer)
- Move the melee weapon from the gear the the hands, or assign it to a quick slot menu and click it
- Press "stand up" key (default "C")
- From standing position: Raise the fist with your meele in the right hand (default key "Space Bar")
- Try to attack (fire button). All should works fine till now.
- Press "crouch" button (Default "X"). The character WILL NOT REACT.
- Unraise your fists (like you are not in fight)
- Press "crouch" button. The character will crouch.
- From Crouching position: try to raise your fists. Character will not react.