When setting the topPullView for a Scroller the class tries to clear the mask on the leftPullView. Seems like that line shouldn't be there and it causes a null pointer exception as the leftPullView is null.
public function set topPullView(value:DisplayObject):void
{
if(this._topPullView !== null)
{
this._topPullView.mask.dispose();
this._leftPullView.mask = null;
joshtynjala
commented
6 years ago
When setting the topPullView for a Scroller the class tries to clear the mask on the leftPullView. Seems like that line shouldn't be there and it causes a null pointer exception as the leftPullView is null.