[issues] Various improvements and bugfixes

Author: LeaVerou

issues.html

@@ -75,7 +75,7 @@ <h2>
 	</div>
 
 	<article property="issue" mv-multiple class="status-{status} issue-{openness} {if(filtered, 'filtered')}" id="issue-{id}">
-		<meta property="filtered" content="{(status and !get(statusFilter, status).show) or !get(openFilter, openness).show or count(tag) and count(selectedTags) and !intersects(tag, selectedTags)}" />
+		<meta property="filtered" content="{(status and !get(statusFilter, status).show) or !get(openFilter, openness).show or (count(tag) and count(selectedTags) and !intersects(tag, selectedTags))}" />
 
 		<h1>
 			<a href="#issue-{id}" property="id" mv-attribute="null" mv-default="{$previous.id + 1}">1</a>