Kolab 3.1 mails not marked as read in roundcube

[Tobias Brunner]

Hi,

Running Kolab 3.1, upgraded from 3.0 on Debian Wheezy, mails are not not 
marked as read in roundcube. They are marked as read in IMAP, but when I 
change the folder and go back to the folder I was before, the mails are 
shown as unread again. The unread counter on the folder list decrements 
when reading a mail, but after reloading the Webinterface the unread 
counter shows the same number as before reading the mails. The behaviour 
is not on every folder, only on some of them. Deleting the browser 
cache, using another browser, and other tricks did no help to solve this 
issue. Any idea?

Cheers,
Tobias