Admin bar showing for all users

For some reason, the Wordpress admin bar is showing for all users of my site.

I thought I had fixed it by adding code to functions.php as per http://www.wpbeginner.com/wp-tutorials/how-to-disable-wordpress-admin-bar-for-all-users-except-administrators/

While this seems to have fixed it for the homepage, every other page on the site still shows the admin bar :slight_frown:

Any ideas in making this disappear for normal users?

Thanks,

Rich