My Global Variable for the URL is just opening "about:blank"!

That’s good to see. It is however very much not working for me. I’m working in projects that have been around since Katalon v7, and are now being upgraded to v11. We’re holding off on upgrading to v11 because this issue is pervasive across all projects in the enterprise. This is replicated by every member of my team.

Katalon team is looking at it for us in this bug report thread: Troubleshooting profile inheritance in Katalon 11 - Bug Report - Katalon Community