Weird behaviour when deleting (or inserting) measure before clef change

[sammik]

Issue type

Engraving bug

Bug description

1. If user add, or remove measure somewhere before clef change, extra clefs appeares in part with multimeasure rests.
2. deleting measure right before this clef change causes even stranger behaviour - clef change disappear, but remains in part, if multimeasure rests are enabled, but not, if multimeasure rests are disabled. if clef appears, it is marked as "measure 5" even, if now, it is measure 4 (one measure were removed), and in fact, it is laid out at the end of measure 3.

Steps to reproduce

1. open parts, switch to score
2. add clef change to score
3. delete or add measure somewhere before this clefchange
4. open part - see, extra clefs are in multimeasure rest measure
5. remove measure right before clef change
6. see - clef is removed
7. open parts tab - clef is there in multimeasure rests, but not in standard rests, notes are placed, as if clef weren not there

Screenshots/Screen recordings

Mmrests

mmrest-clef.mp4

Right before

Delete-measure-before-clefchange.mp4

MuseScore Version

all versions

Regression

No.

Operating system

Ubuntu 22.04

[sammik]

working on it

[sammik]

Multimeasure issue would be fixed by #19108

Missing clef, when removing "measure right before" is part of bigger issue #19107