If the user's browser is not full screen when they launch the App, and subsequently they go full screen, the PowerApp stays at the previous size and doesn't go full screen with the browser. They can reload to get it full screen, but I'm hoping there is a way to make the App fit the browser size, even if it changes.
If you need more information please let me know. Thanks for any help you can provide.
I cannot reproduce your issue. I justed tested on my Windows10 with Google Chrome browser and after I use the full screen mode of chrome, my app also shows as the full screen(I'm using the phone layout so it still have the blank space on the side). Where are you using the PowerApps? With mobile or tablet or laptop? And what is the layout of the apps?
Community Support Team _ Mona Li If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.