Text borders in text frames?

I assume, that the new option to assign a border to a Paragraph styles, only works in Shift + X text?!? At least I don’t get it to work in a text frame.

I can switch on the border for the text frame, but I want to have a border around the Instrument names on the title page and the names are quite different in length.
Any suggestions other than to adjust the frames for every part inidvidually?

Yes, the Border option for paragraph styles only works in text items (input via Shift-X or Shift-Alt-X).