Unicode and stupid password rules
Unicode allows [for] even more stupid password rules. Your password must contain at least one of each of: upper case letter, lower case letter, title case letter, digit, currency symbol, punctuation character, ideogram, box character, emoji, Middle Kingdom hieroglyph, …
Ref.: https://lists.freebsd.org/pipermail/freebsd-questions/2017-April/277246.html.