https://bugs.kde.org/show_bug.cgi?id=525468
Bug ID: 525468
Summary: RTL text rendering issue in kcm_fonts preview dropdown
(Arabic characters disconnected and displayed
Left-to-Right)
Classification: Applications
Product: systemsettings
Version First 6.7.5
Reported In:
Platform: Fedora RPMs
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: kcm_fonts
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Created attachment 195935
--> https://bugs.kde.org/attachment.cgi?id=195935&action=edit
the kcm_fonts preview with wrong Arabic rendering.
When using KDE System Settings in an Arabic locale, the preview dropdown menu
for sub-pixel rendering/hinting options in the kcm_fonts breaks Arabic text
shaping and directionality. The sample sentence is rendered with disconnected
letters (isolated forms) and displayed from Left-to-Right (LTR) instead of
Right-to-Left (RTL).
This used be rendered correctly. However, I'n not sure in with version get
broken.
STEPS TO REPRODUCE
1. run kcm_fonts in Arabic locale
LANGUAGE=ar_OM:ar LC_ALL=ar_OM.UTF-8 kcmshell6 kcm_fonts
2. go to the sub-pixel rendering dropdown list.
OBSERVED RESULT
The Arabic sample text (e.g., "أبجد هوز حطي كلمن صعفض قرشت ثخذ ضظغ") appears:
1- Reversed in direction: Rendered LTR instead of RTL (starts with "غضظ...").
2- Disconnected letters: Individual characters are rendered in their isolated
forms without proper BiDi/Shaping support (e.g., "غ ظ ض" instead of "ضظغ").
see the attached screenshot.
EXPECTED RESULT
The preview should be rendered like this:
أبجد هوز حطي كلمن صعفض قرشت ثخذ ضظغ
SOFTWARE/OS VERSIONS
Operating System: Fedora Linux 46
KDE Plasma Version: 6.7.5
KDE Frameworks Version: 6.30.0
Qt Version: 6.11.2
Kernel Version: 7.3.0-0.rc0.260819gbd5f485f3f02.5.fc46.x86_64 (64-bit)
Graphics Platform: Wayland
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