Reset highlights so they don’t interfere with styleguide text.highlight

static/editor.less

@@ -251,6 +251,11 @@
   width: 1px;
 }
 
+.editor .highlight {
+  background: none;
+  padding: 0;
+}
+
 .editor .highlight .region,
 .editor .selection .region {
   position: absolute;