wine users - Feb 2010 - Strange colors in wine-1.1.38 playing The Witcher

An issue has appeared in wine-1.1.38 while playing The Witcher. Many of the
plants that should appear green are now bright orange. Reverting to 1.1.37 or
earlier fixes the problem.
This is kubuntu-9.10 64-bit system with NVIDIA 190.53 and 195.36.03 (tried both,
same problem) drivers. Compositing disabled. The game is otherwise playable.
Is there some configuration setting that has changed with 1.1.38?

it would be great if you could do a regression test
(http://wiki.winehq.org/RegressionTesting) and then file a bug with the results
in bugzilla.