Ticket #18946: 18946.patch

src/wp-admin/css/edit.css

@@ -623 +623 @@
         float: left;
         font-size: 13px;
         line-height: 1.8em;
-        white-space: nowrap;
         cursor: default;
+        max-width: 100%;
+        overflow: hidden;
+        text-overflow: ellipsis;
 }
 
 .tagchecklist span a {