If you start a random mix that isn't continuously adding, then the %stopcommands are never allowed to clear the $miXinfo{type} and the player ui and web will always show the status as currently playing a mix.  


problem code at line 740:
if (!defined $client || !defined $mixInfo{$client->masterOrSelf->id}->{'type'} || !$prefs->get('continuous')) {
    return;
}

quick fix is to only set the type when mode is continuous (line 511)
		if ($continuousMode) {
			$mixInfo{$client->masterOrSelf->id}->{'type'} = $type;
		}

Not sure what other problems this might introduce, however.  More complicated is to track the type and state until one of the stop commands are encountered, or for static mode we wipe the status after the static list is ended (for non-repeat play).