Here’s the screenshot

https://i.ibb.co/MRnC81V/c2.png

and here’s a video showing that the count disappears for a second after refreshing the page then it returns 0 count.

https://streamable.com/e5rzdj

And also you can see the menu moves to the left and right after refreshing.

• This reply was modified 2 months ago by Arsalan.

This is the used code in the menu:
<i class="fas fa-envelope"></i><span class="fep_unread_message_count"></span>

And this is used in the function file:

/* private message in menu */
add_filter('fep_filter_notification_call_on_ready', '__return_true');
add_action( 'wp_enqueue_scripts', function(){
    wp_enqueue_script( 'fep-notification-script' );
});