To fix this, I usually just make them spawn in class room with no weapons. When they click a button for a certain class it spawns them in the arena with their desired class's weapons.
Thanks for bringing it to my attention. It has been fixed.
Why does the knife have spreadfire when not charged?It has a "Backstab" radius but doesn't appear to be running the backstab support script... this will only work if you're running the other stab knife as well.