I'm working on FM16 in High Sierra on a Mac.
Suddenly I have problems with resizing the working window - not the FM Window.
I wanted to move some buttons from Botton Navigation bar to Top navigation bar. To do this is is necessary to see both bars, which should be a simple process of expanding the working window. But on occasion the facility to do this disappears - that is the arrow to move the window edges does not appear. Of course this could be another bug in OS13, but I have not experienced it in any other App. Any comments would be welcome.