Filter shows parents, not children

I’ve been experimenting with Row Filters (a long-awaited feature). Alas, in OO 5.4.2 when I apply a Row Filter, it shows me the Row and its parents, but the all-important children of that row are hidden. Is there no way to allow us the option of displaying both parents AND children that belong to a filtered row?

If not, then the feature is sadly unusable for me.