Disappearing system breaks

• May 20, 2025 - 03:21

I am using the latest version of MS4.5 (v4.5.2.251141402). When I apply some system locks (see Screenshot 1), then press "M" to hide empty bars, the empty bars are correctly replaced with multi-bar breaks, but system locks on double barlines incorrectly disappear (see Screenshot 2), and when I press "M" again to show empty bars, all system locks on empty bars have disappeared (see Screenshot 3). Is this a bug, or am I doing something wrong? (This doesn't happen with system breaks, which are preserved as expected when bars are hidden and then shown again; it only happens with system locks.)

Attachment Size
Screenshot 1.jpg 26.07 KB
Screenshot 2.jpg 18.55 KB
Screenshot 3.jpg 13.93 KB

Comments

I see the same behavior.

OS: Windows 11 Version 2009 or later, Arch.: x86_64, MuseScore Studio version (64-bit): 4.5.2-251141402, revision: ac9d3bc

I start with ...

20250519 225417 - SysLock 1.png

I select measure 7 and press Alt+Down.

20250519 225417 - SysLock 2.png

Then measure 13 and press Alt+Down again.

20250519 225417 - SysLock 3.png

I press Ctrl+Shift+M and get ...

20250519 225417 - SysLock 4.png

... and, when I press Ctrl+Shift+M again, I get ...

20250519 225417 - SysLock 5.png

Unless someone has a pretty good explanation for this, I'm'a recommend reporting it on GitHub.

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