Layers panel: Group could better indicate which layers are included

[user_0815]

Hi,

Perhaps I'm the only one working this way, but I'd like to give this feedback anyway.

When working with groups (or sub-layers in general), I often click on the top layer to see which of the layers are included in the group to have better orientation. In that moment, I usually focus on working just in side the group and I want to see what's going on in there.

However, clicking on the top layer (for example the "Group" icon) doesn't highlight that little sidebar indicator. Only if I select a member inside the group, it gets highlighted. 

In other words: Selecting a "Group" layer can be confused as a single individual layer. The sidebar next to the group members is there, but not "activated".  I've attached screenshots to better explain it. Note the grey bars on the left side.

For me, work would be easier if the sidebar would be highlighted when clicking on the top Group layer – the same way as if any group member is selected.

Thanks!

[Pšenda]