We've been using Animate to export Mac Projectors for a client that recently upgraded to Mac OS Catalina. After this update, when the app exits full-screen (the app starts in full screen) then goes back to full screen, the display completely freaks out, see attached image. When taking a screen shot, it actually goes back to a clear image for a few seconds before messing up again. When exiting full screen, it returns to normal as well, and stays normal. As soon as you go back to full screen, it is messed up again. The publish settings are for the latest available in Animate, Flash Player 30.