http://bugs.winehq.org/show_bug.cgi?id=30517
--- Comment #3 from Gábor Katona katonag@gmail.com 2012-04-25 08:13:41 CDT --- (In reply to comment #2)
That's a KDE issue, Wine knows nothing about activities.
I don't agree totally, because other apps started using wine honor activities. Only MS Office 2007 apps not (2010 not tested). Also native apps work as expected.
Based on this I think this is related at least partially to wine. I would suggest to reopen the bug.