Mute doesn't work

[yeahword]

Hey fellas,

Lately i noticed a problem on my server, the mute function (esc-playerlist-mute) does not work! It says 'muted' but the person is still allowed to talk... i didn't had this problem some time ago, andi only upgraded to a new version of zombiemod, so maybe that is causing the problem, however maybe it's something else... Anyone got a suggestion?

[Drocona]

This doesn't have anything to do with the server since the muting is all client side.