When you add links to a H4 heading in another article it only goes direct to that heading if H4 is enabled in the contents pane. If H4 is not selected to show in the contents, it will take you to the top of the article when you link rather than to that heading.
We would like to not show H4 in the contents pane, but still link to H4 headings and have it go to that heading in the linked article if possible.