Appreciate you folks capturing this and calling it out. We're aware and looking into it.

An update here - per the note in our Known Issues post from last week we've pushed a hotfix today should make the exploit happen much less often. In cases where it does occur, the weapon may appear to auto fire but the server will restrict it and players should still see normal damage numbers popping up. We have a full fix in the works that will come with a future client patch.