Windows Live Groups expanded in Contact List after sign-in

Whenever I sign in to Messenger, and whenever I get disconnected because
of my network connection, and Messenger reconnects thereafter, all
new-style Windows Live Groups are always getting expanded.
Each time I collapse them, but after the next sign-in, they will be
expanded again.
Also, they are not sub-items of a category "Groups" as seen in many
screenshots of the Messenger beta, but are items of their own directly
in the Contact List root, next to the categories and favorites.

Any solution to this?

Windows Vista Home Premium Service Pack 1 (6.0.6001)
Windows Live Messenger 2009 Beta (14.0.5027.908)
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mynetx [Messenger news, Windows tips, and more...]
http://blog.mynetx.net/