Ticket #26541: 26541-1.diff

wp-admin/css/wp-admin.css

@@ -6448 +6448 @@
 }
 
 .theme-browser .theme .more-details {
+        -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=0)";
         opacity: 0;
         position: absolute;
                 top: 35%;
                 right: 25%;
                 left: 25%;
+        background: rgb(0,0,0);
         background: rgba(0,0,0,0.7);
         color: #fff;
         font-size: 15px;
@@ -6467 +6469 @@
 }
 
 .theme-browser.rendered .theme:hover .more-details {
+        -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=100)";
         opacity: 1;
 }