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This one is a bit hard to describe, but it appears that when you append measures to the score, MuseScore puts a final barline at the end of the score in some cases but not in others.
For example, it doesn’t appear to when there already is a final barline on a new score (which makes sense), but if you replace it with a manually-added final barline, it adds another final barline even though there already is one there (it was there because you added it). In this case there are two final barlines: on the second last measure the one you added, and on the very last measure the one MuseScore added.
By the way, if you instead change the final barline to a double barline (for example), the issue becomes clearer: your double barline is there as well as MuseScore’s final barline.
So I assume this is really two issues in one, or at least it has two causes:
On appending measures, a final barline is consistently added to the last measure even if it’s been deleted.
A manually-added final barline is not really seen as a true final barline, or at least MuseScore doesn’t see it the same as the final barline that was there in the new default score.
Watch the attached screen recording for the best demonstration that I could think of.
To reproduce
Steps to reproduce the behavior.
Make a new score and delete the final barline.
Manually add a final barline to the last measure.
Append a measure to the end of the score (for example, using Command B).
See error: there are now two final barlines (one on each of the last two measures), instead of just one.
Issue type
UX/Interaction bug (incorrect behaviour)
Description with steps to reproduce
This one is a bit hard to describe, but it appears that when you append measures to the score, MuseScore puts a final barline at the end of the score in some cases but not in others.
For example, it doesn’t appear to when there already is a final barline on a new score (which makes sense), but if you replace it with a manually-added final barline, it adds another final barline even though there already is one there (it was there because you added it). In this case there are two final barlines: on the second last measure the one you added, and on the very last measure the one MuseScore added.
By the way, if you instead change the final barline to a double barline (for example), the issue becomes clearer: your double barline is there as well as MuseScore’s final barline.
So I assume this is really two issues in one, or at least it has two causes:
Watch the attached screen recording for the best demonstration that I could think of.
To reproduce Steps to reproduce the behavior.
Supporting files, videos and screenshots
https://github.com/user-attachments/assets/6aec2c47-1fee-4314-a497-1d8481a883e2
What is the latest version of MuseScore Studio where this issue is present?
4.4.2
Regression
No.
Operating system
macOS 12.7.2
Additional context
This began in MS3, and was not present in MS2.
Checklist