http://bugs.winehq.org/show_bug.cgi?id=9085
Summary: PGIIISE flickering UI Product: Wine Version: 0.9.41. Platform: Other OS/Version: other Status: UNCONFIRMED Severity: normal Priority: P2 Component: wine-directx-ddraw AssignedTo: wine-bugs@winehq.org ReportedBy: phajdan.jr@gmail.com
Almost all pop-up windows flicker horribly, there is also flickering in other parts of the interface, which makes it much harder to read and use the UI. There are even situations where UI is not completely rendered etc.
Note that to trigger this behaviour you have to go through main menu, headquaters (for example by choosing to play tutorial, scenario, or campaign), and go to the "battle" screen. Here you can launch some windows using buttons at bottom left (you'll probably get the start turn dialog automatically, without pressing anything).