Title Tag duplicated with Yoast SEO

[pascalknecht]

Sometimes the title tag gets duplicated with the current setup when using Yoast SEO Plugin.

[alexwoollam]

This is a real stab in the dark without seeing any src/yeost settings, but:

Have you hard-coded the <title>?

Check this line in the functions.php (in the theme_supports function):

                 /*
         * Let WordPress manage the document title.
         * By adding theme support, we declare that this theme does not use a
         * hard-coded <title> tag in the document head, and expect WordPress to
         * provide it for us.
         */
        add_theme_support( 'title-tag' );