SC 15.3 will not change language correctly on Gentoo manual install

[JohnLGalt]

Describe the bug
On Gentoo, using manual installation process Manual Build: Make sure you have Qt6 & KF6 (KIO, Solid, etc.) language change does not work. Any language chosen still keeps interface in German.

development packages installed:
cmake version 4.3.3
ninja --version 1.13.2
[from the firsst command]

cmake -B build-release -DCMAKE_BUILD_TYPE=Release -G Ninja
-- The CXX compiler identification is GNU 15.2.1
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Success
-- Found Threads: TRUE
-- Performing Test HAVE_STDATOMIC
-- Performing Test HAVE_STDATOMIC - Success
-- Found WrapAtomic: TRUE
-- Found OpenGL: /usr/lib64/libOpenGL.so
-- Found WrapOpenGL: TRUE
-- Found WrapVulkanHeaders: /usr/include
-- Found Gettext: /usr/bin/msgmerge (found version "0.23.2")
-- Found KF6I18n: /usr/lib64/cmake/KF6I18n/KF6I18nConfig.cmake (found version "6.25.0")
-- Found KF6IconThemes: /usr/lib64/cmake/KF6IconThemes/KF6IconThemesConfig.cmake (found version "6.25.0")
-- Found KF6ConfigWidgets: /usr/lib64/cmake/KF6ConfigWidgets/KF6ConfigWidgetsConfig.cmake (found version "6.25.0")
-- Found KF6XmlGui: /usr/lib64/cmake/KF6XmlGui/KF6XmlGuiConfig.cmake (found version "6.25.0")
-- Found X11: /usr/include
-- Looking for XOpenDisplay in /usr/lib64/libX11.so;/usr/lib64/libXext.so
-- Looking for XOpenDisplay in /usr/lib64/libX11.so;/usr/lib64/libXext.so - found
-- Looking for gethostbyname
-- Looking for gethostbyname - found
-- Looking for connect
-- Looking for connect - found
-- Looking for remove
-- Looking for remove - found
-- Looking for shmat
-- Looking for shmat - found
-- Looking for IceConnectionNumber in ICE
-- Looking for IceConnectionNumber in ICE - found
-- Found KF6KIO: /usr/lib64/cmake/KF6KIO/KF6KIOConfig.cmake (found version "6.25.0")
-- Found KF6WidgetsAddons: /usr/lib64/cmake/KF6WidgetsAddons/KF6WidgetsAddonsConfig.cmake (found version "6.25.0")
-- Found KF6WindowSystem: /usr/lib64/cmake/KF6WindowSystem/KF6WindowSystemConfig.cmake (found version "6.25.0")
-- Found KF6Solid: /usr/lib64/cmake/KF6Solid/KF6SolidConfig.cmake (found version "6.25.0")
-- Found KF6Archive: /usr/lib64/cmake/KF6Archive/KF6ArchiveConfig.cmake (found version "6.25.0")
-- Found KF6Service: /usr/lib64/cmake/KF6Service/KF6ServiceConfig.cmake (found version "6.25.0")
-- Found KF6CoreAddons: /usr/lib64/cmake/KF6CoreAddons/KF6CoreAddonsConfig.cmake (found version "6.25.0")
-- Found KF6Baloo: /usr/lib64/cmake/KF6Baloo/KF6BalooConfig.cmake (found version "6.25.0")
-- Found KF6: success (found version "6.25.0") found components: I18n IconThemes ConfigWidgets XmlGui KIO WidgetsAddons WindowSystem Solid Archive Service CoreAddons Baloo
-- Configuring done (1.5s)
-- Generating done (0.0s)
-- Build files have been written to: /home/john/Downloads/SplitCommander-0.5.3/build-release

To Reproduce
Steps to reproduce the behavior:

1. Go to Einrighten --> Allegemain --> Sprache
2. Click on Any language
3. Click on Ubernehmen Neustarten
4. Upon restarting, everyhing is still in German (see pic below)

Expected behavior
I expect language to change

Screenshots

Desktop (please complete the following information):

• OS: Gentoo Linux, kernel 7.0.12-gentoo-dist-bin, KDE/Plasma, Wayland, QT6
• Browser: Zen Twilight 1.22t (Firefox 152.0.1) (2026-06-21) (64-bit)
• Version: 15.3

Additional context
I am going to remove this and then try to build .AppImage next and see if it works that way.

[JohnLGalt]

I tried the install script method, since initially Gentoo was not listed so I went manual method. Install script works, so only manual installation method is broken.

[JohnLGalt]

Per discussion, a new build might fix this - I'll give this new build a shot and see.

[JohnLGalt]

New commits allow full build of translations, but one section, tags, is still not translated.

Also, for whatever reason, the clone and install method with the GUI installer is in German as well.