DataGrid itemEditEnd called twice

Steps to reproduce:

1. I am using a Datagrid and using a Combobox itemeditor and two itemRenderers(combobox and a TextArea) in my application. I have a itemEditEnd method in the dataGrid , whenever i am selecting a value in the comboBox(ItemEditor for 'place' in the application) and i click on the combobox(ItemRenderer for 'company1' in the application) ,itemEditEvent fired once but when i select a value from the comboBox(ItemEditor for 'place' in the application) and click on the TextArea field(ItemRenderer for 'company2' in the application) , itemEditEvent fired twice.

Actual Results:

itemEditEvent fired twice.

Expected Results:

itemEditEvent should called only once.

Workaround (if any):
Very Complicated.

Thanks
Santhosh N