Wordpress stores the url encoded post_name on DB if the post_name has non-ascii characters.

Mlp_Advanced_Translator_View show_name function lacks the urldecode on the $value so it will display the encoded characters on the input field.

I added this line:
$value = urldecode($value);
right after the line 104 of Mlp_Advanced_Translator_View.php:
$value = esc_attr( $value );
to solve the issue.

Maybe you can add it to the master branch in the next update?

Thanks!
Luis