- Edited
I would like to propose as a test-case reddit.com or old.reddit.com . Afaik on iOS there’s no translation extension that works for this website on Orion, but Firefox on the desktop can do it with TWP. Safari on iOS has no control for target language if the user has picked multiple languages as understood: if Reddit itself shows some UI in English because that’s how the user account is configured, but comments are in a different language, Safari picks as target language the second in the list of user languages.