While working in Framemaker 2019 on Win 10, the working window keeps changing size and blacking out. I have to keep resizing the window so I can see anything. I save a doc, the frame resizes to about 1 inch high by 2 inches across while blacked out. Then I have to minimize the window, restore the window, then resize the window, until I save the doc again. Then same thing.
It seems to be a setting of some kind, because the Framemaker starts up in this annoying setting, and reverts to it constantly.
Check the properties of your shortcut - sounds like the Run: field is set to minimized.