I fixed it for me with a workaround.
In wp-config.php I added these lines:
if (strpos($_SERVER['REQUEST_URI'], 'wp-admin') !== false){
define('CONCATENATE_SCRIPTS', false );
}
Maybe it’s not really a solution, but the media lightbox shows up again.
Regards
-
This reply was modified 3 years, 8 months ago by Oliver.