[3.0.4 update] Reseller Website - text inserted

Hello,

After update to 3.0.4 while logged in as reseller to Webinterface -->Sites-->Website I always got displayed text like this:
(also please see attached picture how it look like)

Code:

Array ( [domain_id] => 70 [sys_userid] => 12 [sys_groupid] => 12 [sys_perm_user] => riud [sys_perm_group] => riud [sys_perm_other] => [server_id] => 1 [ip_address] => * [ipv6_address] => [domain] => be-ma.pl [type] => vhost [parent_domain_id] => 0 [vhost_type] => name [document_root] => /var/www/clients/client11/web70 [system_user] => web70 [system_group] => client11 [hd_quota] => 300 [traffic_quota] => -1 [cgi] => n [ssi] => n [suexec] => n [errordocs] => 0 [is_subdomainwww] => 1 [subdomain] => www [php] => suphp [ruby] => n [python] => n [redirect_type] => [redirect_path] => [seo_redirect] => [ssl] => n [ssl_state] => [ssl_locality] => [ssl_organisation] => [ssl_organisation_unit] => [ssl_country] => AF [ssl_domain] => be-ma.pl [ssl_request] => [ssl_cert] => [ssl_bundle] => [ssl_action] => [stats_password] => [stats_type] => webalizer [allow_override] => All [apache_directives] => [nginx_directives] => [php_fpm_use_socket] => n [pm_max_children] => 50 [pm_start_servers] => 20 [pm_min_spare_servers] => 5 [pm_max_spare_servers] => 35 [php_open_basedir] => /var/www/clients/client11/web70/web:/var/www/clients/client11/web70/tmp:/var/www/be-ma.pl/web:/srv/www/be-ma.pl/web:/usr/share/php5:/tmp:/usr/share/phpmyadmin [custom_php_ini] => session.save_path = "/var/www/clients/client11/web70/tmp" output_buffering = Off [backup_interval] => none [backup_copies] => 1 [active] => y [traffic_quota_lock] => n ) 

This problem is on all sites which belongs to reseller and only while reseller is logged in. If I login as main ISPconfig administrator or as reseller's end-client, everything works fine. Also new created websites by reseller has the same problem.
I do not see anything wrong in log files. Any ideas?