Values in the area chart are over floating

[Kiran_tsa]

Hi,

I am working on a area chart, with days on x-axis, categories as legends and a measure.
I have drill-up on days to weeks, months, quarters and years.

when I am running for few legends or months data chart is behaving as expected. but when I am executing for leaf level data i.e., all legends (more that 15) and weeks data i.e., (52 weeks/year on x-axis), suddenly chart is behaving very strangely and creates a black shade tough the left top of chart body.

Please let me know any solution.

Tnx, Kiran.T