http://bugs.winehq.org/show_bug.cgi?id=18991
--- Comment #86 from Jeff Zaroyko jeffz@jeffz.name 2010-03-16 06:16:28 --- (In reply to comment #83)
(In reply to comment #82) You have an easy, simple and guaranteed to work workaround. Which doesn't break anything. Of course you are welcome to report this bug to makers of Sims for them to fix their game.
I've created an unofficial patch for Sims 3 based on a nocd patch, which fixes the bug in mono by modifying the executable. I don't have a copy of the game to test, so email me privately if you'd like to test it.
Fwiw, I don't think there is anything to fix in Wine. This problem has surfaced on Windows and was reported by Windows users to the Mono project.