http://bugs.winehq.org/show_bug.cgi?id=22952
--- Comment #5 from Dylan Smith dylan.ah.smith@gmail.com 2010-05-30 17:00:31 --- I installed and ran Babas Chess in wine-1.2-rc2 and in a windows XP virtual machine, and found the opposite of the problem that you had. In Windows XP the I-Beam cursor was hidden since it was black with no outline, so when the richedit control had a black outline it was hidden unless the cursor was moved near the edge of the control in order to partly see the cursor. In Wine I found the cursor was shown and visible even with a black background since the I-Beam cursor shown was black with a white background.
I tried checking out the commit before the one identified as causing the regression for just the riched20 subdirectory in order to use an old version of Wine's riched20 dll, but didn't notice any difference in the behaviour of the cursor.
I tried the themes named "Default Full Theme - BabasChess Space" and the "Partial Theme - Black backgrounds". I didn't do anything else after starting the application besides moving the mouse and trying to click the richedit control to see if the caret was shown (and the caret was visible with a black background).