Active css rules should display the parent if no child is present, because when selecting via the page, it sometimes fall out of boundraries and cant be selected, so the child is selected instead. When the child is selected, and no css rules is defined, then it wont display. The only way to check if there are rules is via the right hand pane, and for beginner like me it’s not immediately apparent what’s going on. (correct me if i’m wrong in the terminology)
Also Possible bug: The visible checkmark px size does not reflect when manually resize, only changes when resized via the top dropdown size.