UI text garbled in some cases; all characters in bold font rendered off by one; making Hebrew look like Arab

[ran-dom-guy]

Issue type

UI bug (incorrect info or interface appearance)

Description with steps to reproduce

1. Create a new score or check instruments
2. Return

Supporting files, videos and screenshots

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

4.4.0 revision 0fcd11b

Regression

No.

Operating system

Windows 11 x64

Additional context

OS: Windows 11 Version 2009 or later, Arch.: x86_64, MuseScore Studio version (64-bit): 4.4.0-242390800, revision: github-musescore-musescore-0fcd11b

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

[ShibuyaCyana]

Also encountering this, do we have reliable steps to reproduce it?
To me this only happens with Libertinus Serif (!), and if I change UI font or size in Preference, it would become back to normal. However reverting to previous problematic font size combination would mess it up again.

If I quit with a size that behaves normally, next time MU starts, it's the previously normal size that become messed up.

OS: Windows 11 Version 2009 or later, Arch.: x86_64, MuseScore Studio version (64-bit): 4.4.0-242390800, revision: github-musescore-musescore-0fcd11b

[cbjeukendrup]

Unfortunately we don't really know what's the root cause of this. Might even be something with graphics drivers. It looks like only the bold font, which is actually semi-bold, is affected.

However there are two builds that you can try to see if they fix the problem. Both were actually targeting other problems, but perhaps we're lucky and one of them fixes this problem too.

1. Set fontengine=directwrite for Windows, antialiasing = true, smooth = true #23925 - This is from 3 weeks ago so doesn't contain the latest fixes; and this build contains changes that create other new problems; but it switches to a new font engine (DirectWrite instead of FreeType), which might not have this issue. If that build indeed fixes the problem, we will try to fix the new problems caused by it, and then apply that as the fix.
2. Switch to Qt 6.2.9 #24095 - This switches to a slightly newer version of Qt. Perhaps it was a Qt bug that they fixed in that version. This update also causes other problems, so can also not easily be integrated, but again, if it fixes this bug, then we'll do our best to integrate it asap.

See How to download test builds from pull requests for instructions about how to test these builds.