Not sure if this is xfwm4's fault or xfce4-session's.  Anyway, I have an anjuta
window and a few Terminal windows that get restored to the 2nd workspace after I
start xfce.  Everything on the 1st workspace is fine, but if I switch to the
second one, I can't focus any of the windows unless I click on the titlebar or
borders.  After that, they take focus normally if I move to another window and
back, but each window needs to have its decorations clicked first.  Focus mode
(as you might have guessed) is focus-on-click.