Commented Issue: Tab container inside accordion - javascript tab select error [27051]

with latest November update, tab container inside of an accordion is throwing a javascript error on page load trying to select tab.

_setFocus: function (obj) {
$get("__tab_" + obj.get_element().id).focus();
},

This may be a result of another issue i see posted of the Tab change code always firing.

Tabs in this case are being dynamically loaded into an accordion pane that isn't visible on load.

Comments: Microsoft - Why can't you fix the tabcontrol??? The Ajax Control Toolkit is a great addition to Visual Studio, but unfortunately it tries to set the focus even if the TabControl is not visible. This should be a simple fix and it should have been included in the latest January 2013 release, but it is still not working. I have a TabControl in a ModalPopupExtender, which is only displayed upon a button click. When the page does a postback I get this stupid error: htmlfile: Can't move focus to the control because it is invisible, not enabled, or of a type that does not accept the focus. Microsoft - Please fix this simple bug. Thank you, Alex