I am running maverick and this is still an open bug.

Indeed I have no problems when desktop effects are disabled.

(It does not matter to me, if the panel is expanded or not.)

I use the window selector applet and  the list gets smaller, just clicking by 
two times on the selector.
Then the list stays this size until I change manually to some other window.

But there is some pattern that might help triage the bug: 
* the list is a list of minimized and open windows.
* the second time I let me show the list, it is shrunk.
* it always shrinks from the top of the list to the window that was minimized 
last (exluding this one, so the lately minimized window is still visible)

thus: if the last window I minimize is the first in the list, the bug is
"gone" :)

Maybe the code assumes that minimized windows jump to the first position
in the queue of windows or upon minimization some counter/pointer gets
reset to start with the minimized window.

maybe some other people affected can check if my observation is true at
their computer.

I can try to help more, if you tell me how.

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https://bugs.launchpad.net/bugs/186307

Title:
  Window List Invisibility Issue (Programs Disappear And Come Back Randomly)

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