thank you for your answer, but I think we are talking about different things.
I am able to create a public contact folder and contacts in this folder. My problem (and as I understand the creator of the bug means the same thing) the option to use a public contact folder in the address book is missing when Scalix is used in combination with Outlook 2013 - as shown in this picture in the bug report https://rm.scalix.com/attachments/download/347/office%20365account.JPG
I have one workstation with Outlook 2007, here works everything fine.
With kind regards,