NW2 - window.print in sub window opens behind sub-window content

[Blatman]

MacOS 10.13.6 High Sierra - tested with 0.49.1-sdk and 0.50.0b1-sdk

Test app attached - window.print ok from main window but in menu subwindow it doesn't work correctly with nw2.

Use System Information menu to show sub-window print buttons. Looking closely at the System Information window the print dialog appears to launch behind the window content (hitting return key will open the save finder).

Everything works fine if nw2 is disabled.

src.zip

[rogerwang]

CC #7230

[Blatman]

@rogerwang - not sure if this is similar to 7808 but I tried 0.50.0b1 (MacOS) and the sample app could be quit only from the dock icon Quit but with later builds (eg: 0.55 and 0.59.0) even the dock icon Quit won't work and the app needs to be ForceQuit from Activity Monitor after the subwindow print has been invoked.