Nashville Slash Chords add note relative to root

When using Slash Chords to indicate the base note in Nashville Notation (relative to the scale)
Musecore adds a note relative to the root as well.

For example in C major 4/6 is the Nashville Notation for F/A,
but the chord is realized as a F6/A as if it had been a 4⁶/6

Steps to reproduce:

1. create new sheet
2. select note or rest
3. add > text > Nashville Number
4. write slash chord such as 4/6
5. right click > Realize Chord Symbol