Here is one thing which i noticed, when I create a custom Tab Panel by Ext.define() and then extending the Ext.tab.Panel, the "activeitemchange" event is fired only once (i.e when the component renders for the first time).
After my custom tab panel is painted and I tap on the other tabs, the tabs do NOT switch. The contents of the first tab is shown throughout, no matter which ever tab I switch to.
One thing to note, I m using touch-charts in my app, hence using the sencha-touch-debug.js from the touch charts package only.(Don't know how this will affect).
Please help find a fix.. Is this a bug?