http://bugs.winehq.org/show_bug.cgi?id=19289
--- Comment #10 from Dmitry Timoshkov dmitry@baikal.ru --- (In reply to Alex Henrie from comment #9)
Dimitry, do you know how to write a patch to fix this? If you can do it yourself that would be awesome, but if you can explain it to me I'll try writing it myself.
First thing to do (as usually) is figure out what is going on exactly, what gimp is doing and what it expects, then to write a test case or a simple app that replicates the problem. Only then try to find a solution on Wine side.