Commented Issue: TransitionFrame navigation cannot be cancelled [10753]

Using TransitionFrame instead of PhoneApplicationFrame, I'm unable to cancel navigation in Navigating event. The transition effect starts correctly but, due to e.Cancel = true in my Navigating handler, the OnContentChanged is never called in the frame and the content is not restored. This gives me an empty page. The issue can be reproduced in the toolkit sample source code too.
Comments: ** Comment from web user: Phonolab **

Same issue here, except that I'm using "e.Cancel = true" in OnBackKeyPress to defer the navigation to a later time (to allow for some extra processing to occur on the page), and then, when I finally "NavigationService.GoBack()", the navigation source page (or a bitmap image of it) stays visible atop the destination page (albeit with some transparency). Also, I noticed that the order in which some events are fired on the page that's being navigated from is different from the order of a normal navigation. Specifically, the Page_Unloaded event is fired before the OnNavigatedFrom override is called. But this may be a side effect of the transition not fully honoring the "e.Cancel = true" in its processing of this specific scenario.

I had to disable the back transition for that specific page, but I'd love to see this issue fixed.