Hello! Thanks in advance for your help:
v3.3.stable.official on Windows 10 Pro
When I load my project it reverts the main-scene, in project settings, back to an old scene (always the same one.)
When I correct the main-scene (manually or via the popup) it still loads the old scene when pressing F5. I can run the desired scene via F6.
When I build the project (.exe or .html) it loads the correct start-scene.