<p:pickList> drawn outside collapsing <p:panel>

[jim@jimtough.com]

I have page with some toggleable <p:panel> elements, one of which contains a <p:pickList>. This panel is the only one that does not expand and collapse smoothly. When I click the + button to collapse it, the <p:pickList> contained within it is drawn above the <p:panel> while it is closing and only disappears once the collapse has completed. This is clearly not how it should behave and it looks pretty bad. It does the same thing when I expand the panel.

Has anyone else experienced this? Any workaround?

I'm using IE 7 (no choice - this webapp is going on a corporate Intranet with that browser on the workstations).

[cagatay.civici]

It is an IE bug.