Created Issue: Turnstile Transition not working after Browser-/BingMapsTask [9941]

Hello,

I use the turnstile transition for the page navigation in my app.
After coming back from a phone task like BrowserTask or BingMapsTask, the backward turnstile transition don't anymore. So I have to restart the app.

For example:
Page1 -> Page2 => turnstile transition working
Page2 -> Page1 => turnstile transition (backward) working
Page1 -> Page3 => turnstile transition working
Page3 -> BrowserTask => turnstile transition working
BrowserTask => Page3 => turnstile transition (backward) NOT WORKING
Page3=> Page1 => turnstile transition (backward) NOT WORKING
...

Does anybody know where's the problem?

Thank you!