Layout modifier that tracks focus in the tiled layer while the floating layer is in use. This is particularly helpful for tiled layouts where the focus determines what is visible.

The relevant bug is Issue 4 http://code.google.com/p/xmonad/issues/detail?id=4.

Apply to your layout in a config like:

main = xmonad (defaultConfig{
                  layoutHook = trackFloating
                      (noBorders Full ||| Tall 1 0.3 0.5),
                  ...
              })

It also corrects focus issues for full-like layouts inside other layout modifiers:

import XMonad.Layout.IM
import XMonad.Layout.Tabbed
import XMonad.Layout.TrackFloating
import XMonad.Layout.Reflect

gimpLayout = withIM 0.11 (Role "gimp-toolbox") $ reflectHoriz
      $ withIM 0.15 (Role "gimp-dock") (trackFloating simpleTabbed)

Interactions with some layout modifiers (ex. decorations, minimizing) are unknown but likely unpleasant.