Opening App.qml file opens three qmlpuppets, error in 2D View

Tested on Windows with

Qt Design Studio(PROJECTSTORAGE) 4.8 (4.8.0)
Built on Mar 31 2025 12:47:28

Steps to reproduce:

• Create a new project
• In Projects view, double click App.qml file to open it
• -> Three qmlpuppets open (see attached picture)
• -> There is also an error seen in 2D View: "Line: 1: Window is not supported as the root element by the 2D view."

• I was not able to reproduce this with latest non-project storage snapshot