Fixed groups not being filtered after setOptions

lib/timeline/component/LineGraph.js

@@ -240,6 +240,11 @@ LineGraph.prototype.setOptions = function(options) {
       this.groups[UNGROUPED].setOptions(options);
     }
   }
+
+  // this is used to redraw the graph if the visibility of the groups is changed.
+  if (this.dom.frame) {
+    this.redraw(true);
+  }
 };
 
 /**