Thanks for understanding, fmhsketch.
I just clicked through some tutorials, and this gave me the impression that the viewport is not mandatorily taken over by Corona.
In the Main Menu> Corona> Interactive Viewport, you might find your answer.
https://youtu.be/Y0DsQW2tvPc?t=40
Again, I like to work with scene files and things that I can check if it works or not. Screenshots contain very little information. E.g., how are the preferences set up, what parts of the plugin are active, etc.? I can’t even see what camera set up you use (Not a request! I can’t answer it, I do not run Nvidia here, so not even an option to run the demo.)
There is a dozen+ 3rd party render available. I’m not sure if one can keep up with all plugins and renders while being savvy with the application (for all parts of it). Hence why I love to suggest the native fora for 3rd party apps.
My best wishes