Fixing click to focus problem on Gimp-X11 on MacOS X

If you try to use gimp on MacOS X, you'll find that all the clicks in the tool window needs to be repeated twice, once to select the window and once to select the tool.

If you don't like this beaviour, I stealed from this site the solution:

1. Open a terminal
2. Write

defaults write org.x.X11 wm_click_through -bool true

3. Restart X11 if you have it open
4. Enjoy