Folder List Bug in Windows 8

I have a couple of test systems in my environment that we are seeing if Windows 8 might work here or if we will do the more likely option and keep using 7 until it is end of life.

Anyway, we're seeing a couple of nuances with GroupWise but the largest being that the tree structure under a user's Home does not populate when the application opens until the user toggles between the Mailbox and another folder. So for testers that use the tree structure on the left side of their screen for navigation this has caused panic. Has anyone else experienced this or know of a way to fix it?

Thank you for any feedback.