it’s alright, its just a 'armless bug:)
Oh god I laughed more than I should have.
I’ll look up what this might be and see if I can lend you an arm.
Just kidding I don’t know a damn thing.
to fix it you just select another tool and then switch back.
on a similar topic, some tools (the spears) cast only the arms as a shadow to light sources in first person.
Yeah the devs know about that, i saw a conversation about it somewhere.