Fretboard diagrams: symbols on top of diagram, and position number do not resize when scaling is changed

OS: Windows 10 (10.0), Arch.: x86_64, MuseScore version (64-bit): 3.0.3.5341, revision: e06ea8e

It doesn't matter what scaling you apply in "Format>Page Settings>Scaling", the symbols above the fretboard diagram (X or O) and the position number ("Offset") remain the same size. e.g.

Default:

Scaling of 5sp.

Also, if you change "Scale" in "Format>Style>Fretbord diagrams", these changes are not rescaled either when Page Settings "Scaling" is changed.

Related to #283681: [EPIC] Fretboard diagram issues.