Hi Michal,
formr is supposed to support all unicode (UTF8) characters. In our database we once used a restricted character set by accident
and for some reason some of the fields weren't switched yet. I fixed it now. This should now work everywhere.
A workaround would have been to call
title(main = stringi::stri_unescape_unicode("Otvorenos\\u0165 vo\\u010di sk\\u00fasenosti"))
You get the escaped string by calling
stringi::stri_unescape_unicode("Otvorenosť voči skúsenosti")
in an R session.
but this should not be necessary, except if you use characters beyond the set of utf8_unicode_ci (Czech characters are included in that).
Best,
Ruben