Palettes are appearing incorrectly in master

[zacjansheski]

Issue type

UI bug (incorrect info or interface appearance)

Description with steps to reproduce

Recent change is causing problems with how palettes appear, particularly Layout, but also Keyboard and line elements like voltas

Supporting files, videos and screenshots

Nightly on left, master on right

In which versions of MuseScore Studio is this issue present?

OS: macOS Sequoia (15.6), Arch.: arm64, MuseScore Studio version (64-bit): 4.7.0-253101846, revision: github-musescore-musescore-08261ca

Regression

Yes, this works in the latest released version and is broken in the nightly builds

Operating system

MacOS15

Additional context

Noticed in PRs today

Ran this build to confirm
https://github.com/musescore/MuseScore/actions/runs/19146304101

Checklist

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

[zacjansheski]

Soundflag icon also missing

[cbjeukendrup]

See #30905, which resolves some aspects of this

[zacjansheski]

For visibility: Layout elements and a few other icons are fixed, elements like pedals, voltas, 8va and sim still need to be addressed