Description:

When you launch the application in a different window than you build it (for example if XCode is on display 1 and the app is launched on display 2), there is an assertion failure on startup:
**

ASSERT failure in QCocoaWindow: "Resulting NSScreen should match the requested NSScreen", file sources/qtbase/src/plugins/platforms/cocoa/qcocoawindow.mm, line 1564

In order to be able to launch the application in a different window than the window XCode resides, you can right-click your Qt application target in the dock and select Assign To -> [your other display]. This will allow you to change the display that the target application appears in.

Repro Steps: 

• set your target application to launch on the display that XCode is NOT inhabiting.
• launch the application from XCode (and possibly any IDE, but I only tested with XCode)