Qt Labs Controls Application crashes Qt Quick Emulation Layer

1. Create a new Qt Labs Controls Application.
2. Open the project's file main.qml in Designer.
   You'll see an error message:

   Cannot open this QML document because of an error in the QML file:
   
   Go to error
   Line 1: Qt Quick emulation layer crashed
   

3. Click on "Go to error".
   main.qml will be opened in Edit mode. There is no indication of any error.

The Qt Quick emulation layer should not crash. If this really can't be avoided, Creator should at least give a hint what is wrong with the qml file. When setting Creator to "use QML emulation layer that is built by the selected Qt", the qml file is being shown correctly.