Comment 7 for bug 272171

I haven't looked in Compiz's focus stealing prevention settings. I know using Compiz and Firefox, Firefox doesn't let go of focus when the workspace changes, so the window on top of which the mouse sits doesn't get focus even when using focus follows mouse.

I don't use Metacity, but I know with the only change to Compiz's focus being focus-follows-mouse instead of click-to-focus and with Xmonad's default tiling algorithm, Firefox steals focus.