Crash after closing MSS (master, 5.0)

[DmitryArefiev]

Issue type

Crash or freeze

Description with steps to reproduce

1. Open any score
2. Close MSS

logs.zip

Supporting files, videos and screenshots

bandicam.2026-03-04.17-58-00-419.mp4

In which versions of MuseScore Studio is this issue present?

master (5.0.0-260304034)

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

No response

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

[Jojo-Schmitz]

I can't reproduce (Edit: see below). But I can reproduce this

1. Start MuseScore (in debugger, outside you may not notice the crash, looks like an exit ;-))
2. Open a score
3. Close the score (Edit: actually that step doesn't seem needed, so yes, I can reproduce the original issue, but only when running in a Debugger or when checking for a .dmp file)
4. Close MuseScore.

Crash, inside EngravingObject::~EngravingObject()

Exception thrown: read access violation.
std::shared_ptr<mu::engraving::IPaletteScoreProvider>::operator-><mu::engraving::IPaletteScoreProvider,0>(...) returned 0xFFFFFFFFFFFFFFFF.

>	MuseScore5.exe!mu::engraving::Score::paletteScore() Line 342	C++
 	MuseScore5.exe!mu::engraving::Score::isPaletteScore() Line 347	C++
 	MuseScore5.exe!mu::engraving::EngravingObject::~EngravingObject() Line 110	C++
 	MuseScore5.exe!mu::engraving::EngravingItem::~EngravingItem() Line 132	C++
 	MuseScore5.exe!mu::engraving::Bracket::~Bracket() Line 57	C++
 	[External Code]	
 	MuseScore5.exe!mu::palette::Palette::~Palette() Line 71	C++
 	[External Code]	
 	MuseScore5.exe!mu::palette::PaletteContext::onDeinit() Line 133	C++
 	MuseScore5.exe!mu::app::GuiApp::destroyContext(const std::shared_ptr<kors::modularity::Context> & ctx) Line 448	C++
 	MuseScore5.exe!mu::app::GuiApp::finish() Line 479	C++
 	MuseScore5.exe!main(int argc, char * * argv) Line 177	C++
 	[External Code]	

Might well be a race condition, using a 12 core + HT CPU

[cbjeukendrup]

It looks like this may have been resolved by #33899