“Admin → Appearance → Site Texts” behaves the same way. Customized text affects only the language you select. I get that this behavior will cause inconsistent UI or lots of work in some cases.
Currently there are only two options:
- Disable the
allow_user_localesite setting. Every user will see the default language and thus the customized text. - Customize the text for all the languages you care about.
I’m open for suggestions. I wonder if we should add a “force text override for all languages” option. I am not sure if this should be a global toggle or on a per-string basis. 