Most games have to work on different sized screens. This can be different size phone or tablet screens, resized browser windows, display resolutions, and so on....
Does not work I have a lyout that is stuck on full screen and the sprites are scaling to full screen even if they are a small size, I might quit my subscription and start using other editors
Can you explain more about what is not working correctly? Construct's fullscreen modes have been supported for years and used by thousands of games and working well as far as we're aware.