Extra gray space above Grid Header

Hi

iGrid displays extra gray space above Header in MII 14.0 SP4 Patch 5 Whereas in iChart it is not there.

I tried all options checking and unchecking but in vain. Any help will be appreciated.

[This is not because of any div or html component. When you execute iGrid directly from workbench then also it is there.]

I  have attached image of the iGrid.

I

Thanks and Regards

Khaleel