I've modified the default WPControls solution to reproduce the issue. The version I used to repro this was changeset #74907.
- Create Panorama page with 3 panels.
- Create User Control and put Calendar in user control
2b. Also moved Color Converted to App.xaml resources
- Add user control to second panel
Issue Repro Steps:
- Load the app in the emulator (have not tested on physical device).
- Swipe the screen to slide to the Calendar panel
- Tap the calendar.. month will change to the next month
Issue #2 Repro Steps:
- Load hte app in the emulator
- Swipe the screen to slide to the calendar panel
- Swipe again to go to panel 3.
- Now swipe back to calendar.. month will actually be two months ahead and click the arrow to navigate to previous month jumps back to current month.