When adding a layer inside a group, the highlight of that group disappears. The highlight is to indicate what group has the active layer inside it. Without that highlight additional steps are required to locate the active layer.
For example, create a few groups.
Then expand one group and select a layer, then collapse the group. Or, leave them all collapsed and command click on an object in an unexpanded group.
Create a new object, which will end up being in a group. The highlight of the group disappears. So you don't know which group it was added to.
I check in Beta 2.1.0.1742 and .1790 the same problem exists.
I'm running this on a 2020 27" mac running Ventura.