Hi,

Probably every WP7 developer had to deal with this nasty issue.

Steps to reproduce:
During navigation deactivate app via central hardware button (Win). Important: Reproduces only on Device

Issue:
After activating app back InvalidOperationException with message “Navigation is not allowed when the task is not in the foreground” is thrown and navigation is not processed correctly.

Workaround:

After restoring app from dorment/tombstone it retries navigating  if navigation has failed (yeah, quite simple solution).

It is used like that:
Image

NavigationFixService.cs – https://www.dropbox.com/s/oq0mdjg371y7vvj/NavigationFixService.cs?m

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