I recently installed the November release of the AjaxToolkit, and just discovered this bug (in production no less). It seems that OnActiveTabChanged is firing even when it ISN'T changing. It fires on every postback.
I mistakenly set the impact to "Low", but this is indeed a big problem. I have reverted back to an old release of the Toolkit. Going forward, I will probably abandon all use of the Toolkit.
UPDATE April 10, 2012:
Why is there no way to set the impact of this bug? This is HUGE!!! It's still unassigned after over a month!
Comments: Issue still exists in latest June 2012 version.
I mistakenly set the impact to "Low", but this is indeed a big problem. I have reverted back to an old release of the Toolkit. Going forward, I will probably abandon all use of the Toolkit.
UPDATE April 10, 2012:
Why is there no way to set the impact of this bug? This is HUGE!!! It's still unassigned after over a month!
Comments: Issue still exists in latest June 2012 version.