Tab groups broken?

[Niggemann, Bernd]

I have to correct correct myself.


https://developer.apple.com/documentation/appkit/nstabview

shows the familiar blue hilited button in the screenshot of "Date and Time" in Preferences.

But if you look at a recent MacOS (12.6.2 Monterey) and go to Preferences and look at "Date and Time" you see that the hilited button of tabbiew is not blue anymore.
That was what I was looking at.

Kind regards
Bernd