Live search widget Continue button is disabled

The Continue button is disabled, thereby rendering the widget useless.

How to reproduce problem:
- Create a live search widget
- Turn on Preview
- Type a keyword in the preview widget
- Press continue and wait for results to appear
- Press Create a Topic button
- Hit browser Back button

Result: Search field of the preview lets you type but the Continue button is disabled

Solution: Reload the page or re-generate the preview widget

Tested this in Firefox 3.5 with Firebug disabled

Intuition: Firefox is caching too much or too little of the page state. The widget script might be missing some event handlers. Try cleaning up the widget on page unload.