No adding intervals to multiple notes

I have found one problem that causes a lot of unnecessary work:

no adding intervals to multiple notes (for example for parallel oktaves).

- write, for example, a bar full of 8ths.
- select bar.
- adding dots (articulations) or changing pitch works, but
- adding intervals is not possible!

It says: "No notes selected"

When notes are selected multiple by mouse (command + click), it's the same.

Workaround: You have to select a single note, add the interval, move to the next note, etc.