With SU 2021 on mac OS Catalina.
I use Shaded with texture mode. I see the corresponding icon which is highlighted.
If I click on any one of the other icons like Monochrome, X-Ray, whatever, the Shaded with texture icon is not shown as active, which is normal but no other icon is shown as activated. All icons remain in their default non activated mode although the action is correctly done. I can switch X-Ray on and off at will or change mode but I get no feedback from the icons.
I have some plugins, so it may be caused by one of these.
Bug or faulty plugin ?