Ticket #42275: 42275.diff

src/wp-admin/css/themes.css

@@ -100 +100 @@
         height: auto;
         background: rgba(244, 244, 244, 0.7);
         border-left: 1px solid rgba(0,0,0,0.05);
+        position: absolute;
+        bottom: 0;
+        right: 0;
+        height: 38px;
+        padding: 9px 10px 0;
 }
 
 .theme-browser .theme:hover .theme-actions,