Environment
GroupWise 2014 R2 Support Pack 2
Situation
When the GroupWise Client is opened in Desktop mode on a tablet,
and then switches to Tablet mode, the GroupWise client greys out,
i.e. nothing is visible except for a grey screen. When
clicking on Calendar (on the tab at the top) and then goes back to
the Inbox, functionality is restored.
Resolution
This has been reported to engineering.