Screaming while injured might be a cause of the no sound glitch
found this while watching a streamer after they came out of a closet with iron maiden. The forums wont let me post the clip I have, but I have it if anyone wants. Figured if the devs or programmers see this, they might want to check it out. Please note that I am not saying that this is the only cause of the bug, but it could be one of them.