roundcube 1.5 failed to load remote objects - 1.4.11 is OK!

[Plepps]

Hello,

I've installed roundcube 1.5 on CentOS Linux release 7.9.2009.
I'm not able to load/display remote pictures embeded in my emails.

It's configured for : https://foobar.com/webmail/

After I try to load remote objects manually, like: "https://foobar.com/webmail/?_task=mail&_caps=pdf%3D1%2Cflash%3D0%2Ctiff%3D0%2Cwebp%3D1%2Cpgpmime%3D0&_uid=11678&_mbox=INBOX&_framed=1&_action=preview#loadremote"
I've get the default webserver page (https://foobar.com) in the Viewer and "....loading" in the lower right and nothing happen.

It works for years without any changes.
There are no errors in the apache logs.
Selinux is dissabled.

Normaly I use the rpm from remi repo, but  for testing I use fresh tar.gz from roundcube.net
roundcubemail-1.5.0-complete.tar.gz - failed as well
roundcubemail-1.4.11-complete.tar.gz - works perfect, so it should be somewhere in 1.5.

php --version PHP  7.4.25

Code Select Expand


config.inc.php
<?php
$config['db_dsnw'] = 'mysql://xxx:YYYY@localhost/roundcubemailDB';
$config['default_host'] = 'localhost';
$config['smtp_server'] = 'localhost';
$config['smtp_port'] = 25;
$config['smtp_user'] = '%u';
$config['smtp_pass'] = '%p';
$config['support_url'] = '';
$config['des_key'] = 'xxxxxxxxxxxxxxxxxxxxxxxxxx';
$config['plugins'] = array('additional_message_headers', 'identity_select', 'managesieve', 'password', 'carddav');
$config['language'] = 'de_DE';
$config['spellcheck_engine'] = 'pspell';
$config['mail_pagesize'] = 100;
$config['addressbook_pagesize'] = 100;
$config['enable_installer'] = false;
$config['quota_zero_as_unlimited'] = true;
?>


Plugins
additional_message_headers 1.2.1
carddav 3.0.3
filesystem_attachments 1.0
identity_select 1.1
jqueryui 1.12.0
managesieve 9.4
password 5.3


Any ideas?

THX!

[alec]

https://github.com/roundcube/roundcubemail/issues/8170

[Plepps]

https://github.com/roundcube/roundcubemail/issues/8170

THX!