Created attachment 116507 [details]
Left: system settings, fully translated. Right: stand-alone, partly translated.
Sound config module is translated when opening inside System Settings. But it is not translated when open it as stand alone window through system tray.
STEPS TO REPRODUCE
1. Change system language to non-English language.
2. Right click system tray icon of sound and choose configure sound.
3. The stand alone sound config window should appear.
Some texts in the window are not translated.
All texts should be translated.
Linux/KDE Plasma: openSUSE Tumbleweed
(available in About System)
KDE Plasma Version: 5.14.3
KDE Frameworks Version: 5.52.0
Qt Version: 5.11.2
*** This bug has been marked as a duplicate of bug 390899 ***