the navpoint type icon is not consistently displayed during track edit

Below shows a test track I have created with one track point (#2) converted to a navigation point, with a straight ahead icon (blue):

When I edit the track and move the selection to that track point, sometimes the icon is displayed:

But sometimes not:

If I move the selection back & forth enough (tapping left & right buttons), the icon is finally displayed so I can check for the correct setting, but it should be displayed consistently.