Merge pull request #398 from gaearon/fix-scroll-behavior-call

Call updateScrollPosition for the first time as well

Author: mjackson

modules/behaviors/ImitateBrowserBehavior.js

@@ -13,7 +13,11 @@ var ImitateBrowserBehavior = {
         window.scrollTo(0, 0);
         break;
       case LocationActions.POP:
-        window.scrollTo(position.x, position.y);
+        if (position) {
+          window.scrollTo(position.x, position.y);
+        } else {
+          window.scrollTo(0, 0);
+        }
         break;
     }
   }

modules/mixins/ScrollContext.js

@@ -60,9 +60,9 @@ var ScrollContext = {
 
   updateScroll: function (path, actionType) {
     var behavior = this.getScrollBehavior();
-    var position = this.getScrollPosition(path);
+    var position = this.getScrollPosition(path) || null;
 
-    if (behavior && position)
+    if (behavior)
       behavior.updateScrollPosition(position, actionType);
   },