I tried the latest release and still the same problem. I'm starting to suspect Apple's ios/ipados framework in MacOs. A subwindow/menu not showing must have something to do with the framework translation in MacOs. Some kind of limitation? Running Monterey btw.
I'm not dead in the water as I can use the Mac version or the iPad for smaller work. I'm currently working on a big 10mx2m wall project with ASP. ASP workflow is excellent, Photoshop and Affinity Photo can't compete at all. Trust me I have tried.