Voice 3 rests in rhythmic slash notation are not fully above staff

Describe the bug
If you enter a rhythm including rests in voice 3, and use Tools / Toggle rhythmic slash notation, the rests are only "partially" above the staff.

To Reproduce
Steps to reproduce the behavior:

1. Enter some notes including rests in voice 3
2. Select measure
3. Tools / Toggle rhythmic notation
4. See error: rests are not fully above staff

Expected behavior
Rests should sit completely above the staff

Screenshots

Platform information

• OS: Linux

Additional context
In 3.6.2, the problem was worse, the rests would sometimes not be offset at all, and this at least is fixed (see https://musescore.org/en/node/318860). But still, the default position should be higher. Similar story for voice 4 - should be fully below.