Hidden admins skip the team screen on reconnect (moved to spectators until re-hidden), never
receive the server's team menu message, and a pick from the screen M opens is answered by
telling only their client they joined spectators. The restore runs css_hide at most once, since
it toggles. Each command listener gets its own delegate: CSS keys listeners by handler, and
reusing one orphaned the first registration, which then swallowed its command.
