İ to lowercase should return i but now it returns ï
According to What Unicode character is this ? it is doing what it is supposed to.
İ = U+0130 : LATIN CAPITAL LETTER I WITH DOT ABOVE {i dot}
ï = U+00EF : LATIN SMALL LETTER I WITH DIAERESIS
the English “I” would turn into “i”
So ,what is the solution , so slug setting doesn’t automatically convert these texts and lowercase it doesn’t work,So İ is ï , ö is not converted is there to automate it or I need to do one by one find&replace ?
Yea my guess is it’s not handling the Latin characters correctly, maybe worth filing a bug report and in the meantime finding the ones with issues and daisy-chaining :find & replace 
I will punch my computer , why they say setting slugs handle it automatically than ? Even İ converts to ï surely google doesn’t get this
Only does İ btw the other letters are okay lowercase formatted