Outlook Preview - Subfolders Within Public Folders Not Appearing Within the Directory

Hello,

I just enabled the Outlook preview, and I am unable to see any of the subfolders in the list of public folders within our organization. Is this a known issue/bug, or are the way public folders shown going to be deprecated in this upcoming release? I was trying to find any specific documentation related to changes being made to this feature, but I couldn't find anything specific.

Thanks,
Matt