I suspect it may have been a cached page issue. I was testing in an incognito tab and refreshing between setting changes. The localization text seems right and in mobile I get the correct behaviour. Will try again when I’m near a computer. Apologies if this was a red herring.
Edit: trying again from a new computer with no cache…it is correct. moral of the story…be more thorough I guess. Thanks for looking into it friends!