I've been having an issue that's a bit weird. I'm watching a video inside Chrome in one of my custom made window (that's smaller than the whole monitor). If I maximaze chrome, no problem, it respects the boundaries of the custom made window, however if I maximaze (full screen) the video (like a Youtube video) and not the browser, it stops respecting the boundaries of the custom made window and occupies the whole monitor. In other words, I can maximize an app, but wathing anything full screen it stops respecting the boundaries I created.