Public folders Outlook 2011 and Exchange 2013

We just install Exchange 2013 which now runs alongside with Exchange 2007 (mailboxes and public folders are still in Exchange 2007).

We have migrated some test mailboxes to the new infrastructure. 

If i access them with Outlook 2010 / 2013 (Windows), i can access public folders but if i access them with Outlook 2011, the public folders is not accessible at all, we do not see them.

2 possibilities :

1. Outlook 2011 can see Public folders which are on Exchange 2013 but can not see public folders which are still in Exchange 2007 from a mailbox on Exchange 2013. 

2. Outlook 2011 is still not fully compatible with Exchange 2013. Public folders would not work. 

My question are :

- Are you aware of this problem with public folders on Exchange 2007 when accessing from Outlook 2011 from a mailbox already migrated to Exchange 2013  ?

- Is there a patch or SP in preperation ?

- Someone knows a workaround to see those public folders ?

Thank you a lot for your answers.