During fast click some group stop expanding or collapsing randomly also returns wrong isGroupExpanded value i.e it is Collapsed but isGroupExpanded() still returns ture. and some time it returns right value but further collapse and Expand operation stuck.
During fast click some group stop expanding or collapsing randomly also returns wrong isGroupExpanded value i.e it is Collapsed but isGroupExpanded() still returns ture. and some time it returns right value but further collapse and Expand operation stuck.