MusicXML import of Sibelius ottava handling broken

[lemzwerg]

Issue type

Import/export issue

Description with steps to reproduce

[originally discussed in w3c/musicxml/discussions/552]

The MusicXML file below found in the internet (and shortened) demonstrates the handling of <octave-shift> as done by Sibelius 18.12.0. Here is the (correct) rendering of the file with Finale 27.4:

According to #21499, MuseScore should be able to handle this. However, I get the following, incorrect result.

Since Finale apparently handles <octave-shift> similarly to Sibelius (it also works if I remove the <software>...Sibelius...</software> tag), the intended fix in #21499 should be extended to cover Finale MusicXML files, too.

Supporting files, videos and screenshots

Sibelius test file

What is the latest version of MuseScore Studio where this issue is present?

OS: openSUSE Leap 15.5, Arch.: x86_64, MuseScore Studio version (64-bit): 4.5.0-242560303, revision: github-musescore-musescore-ac76040

Regression

I was unable to check

Operating system

openSUSE Leap 15.5

Additional context

No response

Checklist

• [X] This report follows the guidelines for reporting bugs and issues
• [X] I have verified that this issue has not been logged before, by searching the issue tracker for similar issues
• [X] I have attached all requested files and information to this report
• [X] I have attempted to identify the root problem as concisely as possible, and have used minimal reproducible examples where possible

[lemzwerg]

This is probably the same issue as #24729, i.e., a wrong interpretation of <offset>. Not sure, though. As mentioned in w3c/musicxml/discussions/552, PR #21499 does work for other examples.