I have two UltraExpandableGroupBox  controls on a form say gb1 and gb2.

The form has "AutoScroll" property set to "True".

When gb1 is expanded is pushes gb2 down the form and the scrollbar appears (which is fine).

Now, when one clicks on expansion indicator of gb2 the "ExpandedStateChange" event for gb2 does

not fire; instead, the form scrolls gb2 to the top of the view. Second click on expansion indicator of gb2 works as expected, that is

"ExpandedStateChange" event fires. If the form is enalarged enough so that expanding gb1 does not cause scrollbar to appear  everything works fine.