1. The view is perpedicular and intersecting. The far clip plane (view depth) needs to encompass / intersect the detail plan callout. (this is the same parameter available in the View properties dialog box: Far clip offset.
2. The parameter "Show in" in the View Property dialog box should be set to "Intersecting views"
3. The parameter "Hide at scales coarser than" in the View Property dialog box should be bigger than the scale of the view you want the tag to show.