I'm using wordpress for months and everything worked until today.
In my header.php I have my !DOCTYPE html, however it doesn't appear in my page.
I'm using chrome devtools to debug my code and when I look the source file I see a red dot before the doctype then when I mouse over it I see /ufeff.
Furthermore, in my code I have  right after /head tag that's make a kind of blank space between my header and my body.
I tried to change the encoding to utf-8 with notepad++ without success.
I tried all day to fix this issue and now I looking for some help.