Wrong Alt+Tab order using Shift Switcher

I stopped using Unity's default Alt+Tab switcher due to its mandatory windows grouping, and changed to compiz's Shift Switcher, which looks great and does not group windows.

But Shift Switcher has a very annoying bug about Alt+Tab ordering - I cannot re-order windows by using Alt-Tab, and the order it choses is unpredictable.

Its hard to explain, but Ill try an example: 10 open windows, I'm on Firefox, next to it (in alt+tab order) are xchat, eclipse, terminal, nautilus, gedit.

Alt+tab,tab,tab,release, I'm on terminal.

Now I expect that a quick Alt+Tab would open Firefox (it was the last window). But instead it opens... Nautilus! And I have to Alt+tab,tab... (or Shift+Alt+tab,tab...) to go back to Firefox. And no matter what I do, I'm unable to make Firefox and Terminal stay together on Alt+Tab order using Alt+Tab and release alone. I need to minimize all windows but these 2 to make it so.

And sometimes the order changes randomly, making the 2nd or 3rd window in Alt+Tab order be a window that I don't use for a long time. And I also noticed that by clicking on the windows on Unity's Launcher allows me to change order, so I could click Firefox, click Terminal, and then these would be together in Alt+Tab.

Shoudn't Alt+Tab order be based on which windows had last focus? Shouldn't I be able to "re-order" the stack by using Alt+tab and releasing in the wanted windows in a given order so the next alt+tab will have that order? And why this order sometimes change unpredictably?

Using Ubuntu 12.04 x64 desktop, fully updated with all repos including "-proposed"