(In reply to :Gijs (he/him) from comment #8) > At least one issue here is likely to be that [`RTL_UI`](https://searchfox.org/mozilla-central/rev/6b6c3965d0a79880493b8ae44a92389b72d90636/browser/base/content/browser.js#333-335) is cached and not updated when switching languages. I suppose we should be observing [`intl:app-locales-changed`](https://searchfox.org/mozilla-central/search?q=intl%253Aapp-locales-changed).
Bug 1917069 Comment 9 Edit History
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(In reply to :Gijs (he/him) from comment #8) > At least one issue here is likely to be that [`RTL_UI`](https://searchfox.org/mozilla-central/rev/6b6c3965d0a79880493b8ae44a92389b72d90636/browser/base/content/browser.js#333-335) is cached and not updated when switching languages. I suppose we should be observing [`intl:app-locales-changed`](https://searchfox.org/mozilla-central/search?q=intl%3Aapp-locales-changed).