Master channel shows metering pre Audio FX

[jessjwilliamson]

Issue type

UI bug (incorrect info or interface appearance)

Description with steps to reproduce

The master channel meter should be the final audio output destination. Currently, the master channel shows the metering before any Audio FX is applied on the master channel. Audio FXs on the master channel should be pre master channel meter.

Please watch video for full explanation.

Supporting files, videos and screenshots

https://github.com/user-attachments/assets/f6fc0d20-b5c1-4610-b063-9884c99db078

In which versions of MuseScore Studio is this issue present?

Nightly

Regression

No.

Operating system

macOS 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