Hello,
we've just installed the new universal gui 2023.2.12 b1.0, where detail tab pages show icons. We see the icons on almost half of the detail tab pages, but we have no idea why they aren't shown on other detail tab pages.

So far i've ruled out the following:
It happens for both tables and views.
It happens for both tables and variants.
In the above image, both ‘Dienstverband’ as ‘Acties - beheer’ use the same detail screen type.
All details in the image have icons configured on the subject/view/variant.
any idea why icons are missing for some detail tabs?