MS4.4 crashes if mixer undocked and the user double clicks the Mixer button 2 or more times

[scorster]

Issue type

Crash or freeze

Description with steps to reproduce

1. Start or Restart MuseScore 4.4
2. New score / Done
3. undock mixer
4. double click the mixer button
5. double click again

Result: MuseScore usually crashes. IF not, double click another time or two.

NOTE: I was able to replicate this a dozen times in a row. Then I couldn't replicate. So after reopening MS4.4 I dragged the mixer a short distance, double-clicked the Mixer button, and again incurred the crash.

UPDATE: New alternate replication steps:

Today the crash occurred after 4 single clicks to the Mixer button

1. Start or Restart MuseScore 4.4
2. New score / Done
3. undock Mixer or move the Mixer
4. single click the mixer button 4 times

Supporting files, videos and screenshots

It's always a silent crash, so there's no diagnostic log.

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

OS: macOS 13.5, Arch.: arm64, MuseScore Studio version (64-bit): 4.4.0-242390800, revision: github-musescore-musescore-0fcd11b

Regression

No.

Operating system

Mac OS 13.5.2

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

[cbjeukendrup]

This is very probably the same as #23505, and thus might be fixed by #24095. That fix can be tested in this build: https://github.com/musescore/MuseScore/actions/runs/10539698714

[scorster]

I tested the linked build and it still crashes

OS: macOS 13.5, Arch.: arm64, MuseScore Studio version (64-bit): 4.5.0-242371548, revision: github-musescore-musescore-0cd4e40

It still crashes on double clicking Mixer button, as described here in the original post; and my system specs are the same.

Other UI issues:

1. the undocked Mixer still has the bad habit of forgetting its last location.
2. the "resize window arrows" appear only when the cursor is fully outside of the undocked Mixer pane.

[DmitryArefiev]

I can't reproduce it on my side.. (4.4, macOS 13.6)

Screen.Recording.2024-08-30.at.16.55.09.mp4

@scorster Can you attach the video how you're doing that please?
Also, did this crash happen in 4.3.2 ?

[scorster]

Sorry if this was a bum steer! Presently I can't reproduce this crash in 4.4 but will make a video if I can replicate. Wonderful if this is finally fixed.

Hard to believe I would have accidentally opened 4.3.2 on so many multiple occasions when testing, but anything's possible.

[scorster]

As reported, I couldn't provoke the crash yesterday.

Maybe it's only a Friday and Sunday thing ...

Mixer.Crash.on.Double.click.Mixer.button.mp4

[scorster]

Here's another video where MSS4.4 crashed. And while the final single click is close to the penultimate click, but they are likely far enough apart that they wouldn't qualify as a double-click. I mention this because I've definitely noticed 4.4 and 4.3.2 crashing on a single click to the Mixer toggle button.

Sorry. No crash logs. Will send if I get one.

MSS4.4.Mixer.Toggle.-.Double.click.crash.02.mp4