--- a/browser/devtools/responsivedesign/responsivedesign-child.js
+++ b/browser/devtools/responsivedesign/responsivedesign-child.js
@@ -108,17 +108,20 @@ function screenshot() {
   canvas.width = width;
   canvas.height = height;
   let ctx = canvas.getContext("2d");
   ctx.drawWindow(content, content.scrollX, content.scrollY, width, height, "#fff");
   sendAsyncMessage("ResponsiveMode:RequestScreenshot:Done", canvas.toDataURL());
 }
 
 let WebProgressListener = {
-  onLocationChange: function onLocationChange(aWebProgress) {
+  onLocationChange(webProgress, request, URI, flags) {
+    if (flags & Ci.nsIWebProgressListener.LOCATION_CHANGE_SAME_DOCUMENT) {
+      return;
+    }
     makeScrollbarsFloating();
   },
   QueryInterface: function QueryInterface(aIID) {
     if (aIID.equals(Ci.nsIWebProgressListener) ||
         aIID.equals(Ci.nsISupportsWeakReference) ||
         aIID.equals(Ci.nsISupports)) {
         return this;
     }