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When running my Xamarin Forms UWP app in Windows 10 Assigned Access mode there is a bug that leads to missing updates in my GUI when it is updated through a Call to Device.BeginInvokeOnMainThread. This is done since the update is triggered by a callback from another thread.
I believe the solution might already be found and explained in the following link:
The last comment says that updating resolved the issue. Can you confirm that doing so as well as doing a typical clean/rebuild doesn't help, and possibly provide a reproduction project?
Hi. I am currently running Xamarin Forms 126.96.36.1992 and the problem is still present there.
I experience problems when I want to update my GUI from another thread than the main thread. In my case it is from a callback from a "Wifi scan completed event" from Windows. Therefore I wrap my UI update code with Device.BeginInvokeOnMainThread(...). This Works fine in a normal Runtime environment, but when running in Windows 10 assigned access mode it does not work properly since the visible Window is no longer the main window...
I was not involved in the Forum thread, but Attached this merely as a possible solution for you guys.
I've updated the referenced forum thread with more info. The issue returned after Windows 10 Cumulative Update for 2017-09 was installed. Further CUs, Win 10 release 1709 and Forms updates (to 188.8.131.52779) have made no improvement. Unfortunately, due to an issue with ListView on UWP we've had to revert to Forms 184.108.40.2060 at present.
A PR is open for this which uses a check for the assigned access/above lock state: https://github.com/xamarin/Xamarin.Forms/pull/1534
Thanks - Looking forward to seeing this in a stable release.
Should be fixed on 2.6.0-pre1