In Sancrament after the first rest in the Rookery I’m speaking to the messengers from the church and the prompt at the top of the screen is in a language other than my localization settings.
Same issue just did a bug report for that problem too
Looks like a dialect of French, perhaps.
./edit yeah, there’s at least one other post for this. 
As an update, I’ve run into other NPCs with this not just in Sacrament. Its very random though
Wrong language first time I entered the city. Ellsworth and Winnick prompts are not in English.