http://bugs.winehq.org/show_bug.cgi?id=30979
--- Comment #8 from Richard rgriffith64@yahoo.ca 2012-07-06 10:14:19 CDT --- For the record, my system is also Ubuntu 10.04 LTS, Wine 1.4, prop Nvidia.
The problem seems to be a "difficult" graphics config that some windows drivers also have problems with. Again, the applied "fix" just changes the settings so the game does something different that does not create the problem. It is a workaround.
To confirm a wine bug there would need to be testing on a dual boot system. The game would have to work cleanly on windows and have the green water problem under Wine. As there is still diffrence of the graphics drivers between windows and Linux, that would still not be a full confirm of a wine bug.