Window not showing when in full screen with other app

When clicking on the status bar icon, the window appears on the desktop screen rather than the screen with full screen application. What needs to be changing in order for this to work?

[w-i-n-s]

@alexandergmacleod Check all desktops and choose right one in code

I've tried adding: NSRect screenRect = [[NSScreen mainScreen] visibleFrame]; in the openPanel method but that does not work. I think the problem is thatI have switched off the 'Application is agent (UIElement)' key so the window always appears in the same desktop as the main window. Any ideas?