Opened Emails not getting marked as read

[katztrd]

OXtender 6.2.0.26 on Outlook 2003
Server/GUI 6.8.0-6802
Cyrus 2.2

Outlook marks them as read when I open them but the WebGUI does not.
If I manually mark the email as read in the GUI it works.

[katztrd]

Same thing happens on Shared Inbox "all"
Error: No keep-seen access to mail folder Group Inbox.all (IMAP-2011, -392807216-24342)

Once again Outlook is fine and if I manually mark the Email as read it works in the WebGUI.