Thank you for reporting this bug. We will make it our priority to review this report.
AccordionLayoutContainer does not fill parent until window resize
I've been banging my head against the wall for several days on this. I've viewed http://www.sencha.com/forum/showthre...h-parent-panel for the Ext Js library and verified that my accordion is the first child of a variable-height component. The layout works correctly after I resize the window, but not until then.
I've attached some screenshots demonstrating the behavior. The "Stuff" panel is expanded in both of them.