Hello,
When I change my headset device in the settings and save the changes,
it doesn't apply and resets every time, so I can't use voice chat. Is this normal?
I deleted it because I may have misread what you wrote. If you're talking about a microphone, developer said it needs to be specified in the Steam settings https://sbox.game/f/general/2206/1/#post3 (I have no idea where that is). But you wrote that it's about headphones, so I don't know the answer.