I have a program where, for various reasons, I have a visual.window open, and then I present a dialog using gui.Dlg. On MacOS, this works just fine. On Windows 10, the mouse does not work inside the dialog box until you click outside the psychopy window or alt-tab out and back. I can’t figure out a way around this.
Windows 10 is known to have issues with tracking the active window, so I’m not sure if there’s anything to be done at this end. I’m open to ideas, however.