I use Kubuntu 22.04 When using Arabic layout, pressing the key ﻻ + any other control key (like ctrl or alt) will print the key ﻻ instead of taking it as a shortcut. This problem occures in KDE and QT apps and does not exist in Gnome apps. For example in Libreoffice with KDE integration, when I use Arabic layout and press CTRL+ﻻ (which corresponds to CTRL-B) it prints ﻻ instead of making the text bold, which is very annoying. I had to remove KDE integration and use gnome integration in Libreoffice to solve this problem. I wonder what causes this problem and is there any solution. Best regards.
This is most likely an issue in Qt itself, as when using LibreOffice with KDE integration, it's actually just using Qt libraries, not KDE libraries specifically. So I would recommend that you submit a bug report at https://bugreports.qt.io/. Thanks!