Created attachment 98068 [details]
Screenshot to explain this bug
Hard to explain in words. Please see attached screenshot :-).
This is a regression between 4.2-branch and 4.3-branch. Doesn't look like this is done intentionally. It is now very hard to see there is some content under the subdivision or not. (like the 'Page' subdivision in the screenshot).
On pc Debian x86-64 with master sources updated today, I can reproduce this.
Joren: here again, I think https://bugs.freedesktop.org/show_bug.cgi?id=77874#c6 applies here too.
So put it as FIXED. Don't hesitate to reopen this tracker if I'm wrong.