Issues in ListModel (puppet crash, different "not supported as root element"-error message)

Steps to reproduce:

• Create a general empty project
• Create new file: File -> New file -> Qt Quick Files -> Qt Quick Views
• In projects view, double click "xxModel.qml" file to open it
• -> "Internal process (QML Puppet) crashed" seen in 2D view
• Click OK
• -> (Expected) error seen in 2D View, but differs from the one seen in non-project build
• 
• In non-project storage build error message is:
•