Change the layout with hide empty staves and small staves leads to crash

2.1 version (active also with 2.2 dev.1c05779) / Windows 10

1) Create a score for three instruments eg Flute, Oboe and Clarinet (4 measures is enough)
2) Clarinet staff -> Staff Properties -> Tick "Small staff" -> Ok
- Test file at this step: empty Flute-Oboe-Clarinett.mscz
3) Clarinett staff always: enter a 16th note and press "R" key until a second system is created, so approximately at the 2nd beat of the last measure

• The test file at this step: Flute-Oboe-Clarinett.mscz

4) Style -> General -> Tick "Hide empty staves" -> Ok
5) "I" -> Remove Flute and Oboe staves -> Ok
6) Undo -> Redo

Result: crash

• This issue is related to the layout. Hide empty staves, and Small staves are, so, involving.
  Eg just uncheck the small staff to avoid the crash, or more simply, and finely, by modifying the content of the first measure of the clarinet: eg, enter a whole note instead of the 4 X 4 16th. And so, the layout change immediately.