在Wordpress Core中修复之前，您可以使用这种“脏”方式：

Switch to user locale before admin bar items are processed:

add_filter( \'admin_bar_menu\', \'ws390690_admin_bar_in_user_locale\', 10, 1 );
function ws390690_admin_bar_in_user_locale($wp_admin_bar){
    switch_to_locale( get_user_locale() );
    return $wp_admin_bar;
}

Switch back to site locale after admin bar has been rendered:

add_filter( \'wp_after_admin_bar_render\', \'ws390690_admin_bar_in_user_locale_back\', 10, 2 );
function ws390690_admin_bar_in_user_locale_back(){
    restore_previous_locale();
}