As a side note, if there is a player who abuses the MG glitch and none of our admins are around, it is possible to kill them by aiming beneath the MG at the first floor level, like in the screenshot I attached. I know it doesn't fix the issue, but from personal experience I don't feel as annoyed when I'm in another server and experience the same situation, because I know how to kill the guy.
Hopefully, most of the time there will be at least one admin around!