As stated in the subject title, V9 corona lights stay visible in viewport when red dots are activated (i.e. “editor visibility=off” in the basic properties)- - this wasn’t the case with earlier version, so I assume it’s a bug?
Hi there, we have this logged! 
This issue has been addressed in the latest Corona 10 daily build. Please feel free to test it out.
https://forum.corona-renderer.com/ Chaos Corona 10 for Cinema 4D daily builds - Changelog