UI Text is Blurred after update to 2017.3.1.f1

After I updated to 2017.3.1f.1 every time I add a new text is blurred, why is happening this? how can I fix it?

I have tried to increase the reference pixels per unit with no results

Thanks!!!

I answer my own question… You need to select your font in the Project Files, then in the inspector change the character to Unicode and hit apply