Favorites top bar issue

None plugin was responsible. The issue is that you read the top bar favorite count from cookie.
If you swap browser the count is lost, because it is within the cookie.
If you add a favorite from a browser and go to another and add a favorite from there the number will become from 0->2 and that confirms it.

You should have an option “Enable fragment updating” but didn’t find one in your settings.

Anyway, this PHP code fixes it:

add_action( 'template_redirect', 'woodmart_safe_sync_wishlist_cookie' );

function woodmart_safe_sync_wishlist_cookie() {
    if ( is_admin() || ! is_user_logged_in() ) {
        return;
    }

    if ( function_exists( 'woodmart_get_wishlist_count' ) ) {
        
        $count = woodmart_get_wishlist_count();
        
        $current_cookie = isset( $_COOKIE['woodmart_wishlist_count'] ) ? intval( $_COOKIE['woodmart_wishlist_count'] ) : -1;
        
        if ( $current_cookie !== intval( $count ) ) {
            setcookie( 'woodmart_wishlist_count', $count, time() + 7 * DAY_IN_SECONDS, '/' );
            $_COOKIE['woodmart_wishlist_count'] = $count;
        }
    }
}