Bug in king mode?

Hello.
In the king mode, when a player is king, he selects the game. If that game is the one of collecting the stars in the sky, the king/commander can actually use the grenade launcher and kill 6 or even more players before they even jump to get the stars. And the commander can actually die because of it also.

Is this a bug or the timing isnt correct? Should the commander be allowed to use the rifle/granade launcher (I forgot the name) to kill other players?

Thanks and good evening :)