Created attachment 125220 [details] screenshot SUMMARY This issue does affect X11 session. I have american english and portuguese languages in Languages kcm. Context menu of window decoration, tooltips of buttons (minimize, maximize, close, keep above, etc), alt+F3 menu and any window opened via context menu (Configure special window settings, Configure special application settings and Configure window manager) are translated to portuguese despite my current language is american english. See the attached screenshot please. EXPECTED RESULT window decoration respects system language SOFTWARE/OS VERSIONS Operating System: Arch Linux KDE Plasma Version: 5.17.90 KDE Frameworks Version: 5.66.0 Qt Version: 5.14.0
ops, I meant "this issue does NOT affect X11 session.
This issue also affects Neon unstable edition.
Urgh, right. Relevant code is startkde. runStartupConfig() contains i18n setting. It's in startplasma-waylandsession.cpp not startplasma-wayland.cpp which is after kwin.
cannot reproduce on Plasma 5.20 beta. Operating System: Arch Linux KDE Plasma Version: 5.19.90 KDE Frameworks Version: 5.74.0 Qt Version: 5.15.1