I have issue with child windows, too. In the screenshot you can see that DF shows the child window in windows management but, is not able to manage it (and the DF buttons are missing in the child window).

I think it's OpenGL because there is an option for OpenGL acceleration.
Child windows can be moved anywhere outside the application. There is also an option ("Floating frames", FDI?) that allow to minimize the main window only while keeping the child windows exposed. In the taskbar there is only the the main app. The app is available also for Mac, I think it should use some multiplatform type.

Yes. In fact, I don't what I did but, finally it seems to work. It recalls windows profiles correctly. Only the DF buttons are missing on child windows. Great

It will be cool to be able to access all detected windows options (including childs) on right click of DF tray icon.

See my edit above

Sorry, it tooks me a long time to think


I mean a sub-menu with all detected windows on DF icon right click, to select them.

And adding a customizable menu like this would be possible? For example, instead of windows title bar functions buttons?
https://github.com/AlexanderPro/SmartSystemMenu
Or adding a drop down menu to windows title bar?