I’m not sure whether this is a feature or support request.
Being English (only) speaking, I don’t typically deal with accented characters other than author names in scientific publications. Paperpile distinguishes accented vs. non-accented characters, which I’m sure is important, but it makes it tricky to search for authors with such characters. I often don’t remember whether a name has letters which are accented (or what the accents are and over which letters), and many of the entries of such authors in my library are missing the accents (sometimes because the authors publish with and without the accents). I also don’t know the accent codes (though I should probably learn them). Could there be a way to search while ignoring the differences between accented and unaccented characters, sort of like ignoring case?