Columns do not update properly under certain circumstances in max mode

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Make the following window order in a stack
       xterm
       firefox
       xterm
2. switch to the first terminal
3. set the column mode to max mode
4. move the terminal over to the right using mod+l.

What is the expected result? What do you see instead?
The window should move as normal, but instead, the new column gets created, but 
the window that gets moved over appears to stay fullscreen, the columns appear 
to fix themselves when you move the mouse over the odd column.

What version of the product are you using (wmii -v)? On what operating
system (uname -a)?
wmii-hg2763

Original issue reported on code.google.com by adkilgore on 12 Oct 2010 at 12:21

[GoogleCodeExporter]

Original comment by adkilgore on 12 Oct 2010 at 12:24

Attachments:

• strange_column_behavior.jpg

[GoogleCodeExporter]

I cannot seem to reproduce this one consistently on purpose, the procedure 
outlined above does not always work. I have done it more times by accident. but 
after playing around with the columns awhile, I can usually eventually 
reproduce it on purpose.

Original comment by adkilgore on 12 Oct 2010 at 12:30

[GoogleCodeExporter]

 Window number      name
---------------------------
 1/3.               xterm
 2/3.               firefox
 3/3.               xterm
It also appears that the window visible on the right that is only half visible 
is in fact window number 3 (the one in the back), where the window that I moved 
was actually window number 1, and is not visible anymore, but should be.

When I move the mouse cursor over to the right column, the new visible windows 
are 1 on the left, and 3 on the right, though it should be window 2 (left) and 
window 1 (right) 

Original comment by adkilgore on 12 Oct 2010 at 12:47

[GoogleCodeExporter]

I made a typo on the last statement, 

I said:
When I move the mouse cursor over to the right column, the new visible windows 
are 1 on the left, and 3 on the right, though it should be window 2 (left) and 
window 1 (right) 

I meant:
When I move the mouse cursor over to the right column, and the columns fix 
themselves the new visible windows are #3 on the left, and #1 on the right, 
though it should be window 2 (left) and window 1 (right) 

Original comment by adkilgore on 12 Oct 2010 at 12:49