http://bugs.winehq.org/show_bug.cgi?id=21592
--- Comment #4 from rickcockrum@gmail.com 2010-02-03 20:33:44 --- (In reply to comment #2)
Created an attachment (id=26047)
--> (http://bugs.winehq.org/attachment.cgi?id=26047) [details]
Patch: Use acceleration amount when changing the value through arrow keys
Does this patch help?
I don't have the build environment to test the patch, but, as Nikolay said, if the temp variable were passed to UPDOWN_DoAction(), it probably would work since that appears to be the same thing that is done when the mouse is used.