While running my application in Blackberry Torch 9810 OS 7.0 I am facing some performance issues given below.

1) Tap Event is not registering properly in the toolbar buttons especially left button. Although when I am using Fixed button library to increase the tap zone. Tap event gets registered in increased Tap area but not exactly on button.

2) Scrolling is not smooth for the list containing large no of items.

3) A blank screen is visible for a fraction of second when you navigate from one screen to other. This I have also seen in kitchen sink app running in Blackberry Torch.

Is Sencha Touch is fully supported BlackBerry OS7.0 or not ? I am facing these issues in BlackBerry Torch 9810 OS 7.0.