The active tab in Clay is confusing because typically an active tab would have coloration and the non active tab would be more in line with the base text color or not highlighted. It seems to be backwards, the issue has been occuring long before 7.2 Alpha 1.
Please read this post
- Put a portlet in a page.
- Go to Look and feel configuration. There you can find these tabs
The modern tab style would be good to use in this case https://lexicondesign.io/docs/patterns/tabs.html