Top n by sum of category

Hi Experts

I am experiencing this strange problem while filtering the top n employees by sum of category. Though it displays the chart, but this is not the correct representation.

I have attached the snapshot as well to have the top 10 employees by grand total of R code(category). Please have a look at the June tab.

I appreciate your suggestion on the same. Have been stuck on this

for quite sometime.

Regards

Kanu