The icons for muted, deafened etc are displayed properly on firefox.
On chrome however, they are spread out to the left with empty gaps, instead covering part of the user name.
To fix it, I changed this row in the css file:
#mumbleViewer span.mumbleChannelViewer-statusIcon { text-indent: -9999px; float: right;}
to this:
#mumbleViewer span.mumbleChannelViewer-statusIcon { text-indent: -9999px; float: right; width: 0px;}
ie adding "width: 0px;"