Acciaccatura won't play and affects the main note when slurred (MS Basic)

[krasko78]

Issue type

General playback bug

Description with steps to reproduce

1. Open attached score in latest nightly build.
2. Observe that the acciaccatura in m.26 along with the main note don't play.
3. If the slur between them is deleted, then the main note is played but the acciaccatura remains silent.
4. Works as expected in 4.6.5.

Chopin - Op.Posth No.21.mscz.zip

Supporting files, videos and screenshots

n/a

In which versions of MuseScore Studio is this issue present?

latest master / nightly build

Regression

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

(Doesn't occur in 4.7)

Operating system

Windows 10

Additional context

Doesn't occur with MuseSounds

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

[coderabbitai]

🔗 Related PRs

#33091 - [4.7.0] Fix #33089: Music plays after being deleted [merged]
#33093 - [4.7.0] Fix #32975: Playback of a Replaced Instrument Despite Selecting a Measure in a Different Staff [merged]

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[manolo]

Not limited to the acciaccatura: a slurred tremolo is silenced the same way, and not only on MS Basic, any VST3 instrument too (MuseSounds unaffected). The trigger is having 2+ articulations at once (slur + tremolo); removing the slur makes it play.

Reproducible using MS Basic: at mf, a tremolo note un-slurred plays, the same tremolo under a slur is near-silent. Works in 4.7, so a regression.

Attached: SlurredTremoloSilent-MSBasic.zip

[krasko78]

Thanks for the PR, @manolo! I have never been familiar with the playback and didn't know where to look. :)