Commented Issue: Setted Transitions are nulled after opening a ListPicker in full screen [9782]

Here's the testing procedure:
- Set a TransitionFrame
- Add two or more pages to the app with transitions applied to them
- On the entry page, add a ListPicker control with more than 5 items (to force it to full screen opening)
- Add a button or hyperlink to allow navigation to the 2nd page
- Run the app
- First text the navigation button and that the transitions appear
- Get on the first page, click the ListPicker to open it
- Hit any option of the ListPicker to close it
- Try the navigation again; the transition should now fail...
Comments: Fixed on changeset 76139