I was having a problem with the taskbar not showing up in windows. I finally solved it by adding two lines:
Window1.Fullscreen = False
That worked great for Windows, but it really screwed up the Mac! I have methods that adjust placement of buttons on the screen to keep them centered both horizontally and vertically. However, when I toggle back and forth between several windows the window.height keeps changing. On Window1 it seems to toggle back and forth between 741 and 1000! In other words: I go back and forth between two windows using buttons which call the methods to setup the screen. Each time I come back to Window1 it changes from the last time. How can the window size keep changing? What am I missing?