My post title appears twice on the browser title bar. Please see this as an example: https://www.notionbug.com/newly-found-planet-just-right-life/

I've tried deacivating plugins but didn't worked. I've also tried clearing the cache, still no success.

2 Answers 2


check Two title tags in my header

there is already add_theme_support( 'title-tag' ); in functions.php file.

the wp_title() tag in the header is automatically added.copy your parent theme header.php to your child theme and delete the wp_title() tag in the header.php


I've just answered my own question.

  • In your editor section, click on Theme Functions (functions.php)
  • Ctrl+f and find add_filter
  • Ctrl+f and find add_filter You’ll get something like this: add_filter(‘wp_title’, ‘some_function_name’ );
  • Remove this line and update the file

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