I am facing an issue with my app, that happens after answering a phone call. When I finish the call, and go back to the app, the GUI either not responsive, or completely messed up in some case (meaning the layout looks weird). However the app behaves completely ok, when it's sent to the background and after running many other apps. No issues whatsoever, the only issue I discovered so far, is after answering a voice call
The page is resized when there is a phone call. If you have built your layout correctly with the designer and used anchors then everything should work properly.
Hard to say anything else without seeing the code.