Problem with Precise beta 1, unity-3d, and wine menus?

[Dan Kegel]

Hi all,
on Precise beta 1 logged in with unity-3d, giving the command
  wine winemine
and then clicking on the "Game" menu usually results
in only a small part of the pulldown menu showing up.
(Also shows up in many other apps that use menus,
e.g. mspaint.)

This is not a problem in unity 2d, or in Ubuntu 11.10 with unity 3d.

Using virtual desktop, or telling the window manager to not manage
windows, works around the problem.

In all cases, I'm using the commercial nvidia drivers
supplied by ubuntu (for precise, version 295.20;
for 11.10, version 280.13), so I'm not sure if the problem is
the new X, or the new drivers.

Before I go reporting an ubuntu bug, or jamming newer drivers
into my older ubuntu system, has anybody else noticed this?