Webi export to excel misaligned border free cell

Hi

I'm using Webi XI 3.1 SP3 FP 3.3.

I've a report in which I've put border using a Free standing cell. When I export this report in Excel format (browser/rich client), the border comes as empty at the start of the excel and after which the report blocks/data come.

Why is this happening?

Thanks

Deep