Junk script on Hover

[sajalgour2309]

Hi,

I am not sure if this is a bug of new release Feb-19 but i have never experienced this before in earlier versions. 

On hover in bar chart some junk script is coming. I have given proper label to each dimension and measure but still this junk is coming on hover. If i refresh the page, junk is gone. 

Not sure what is happening. I am not using any extension.

Only happening in Stacked bar chart. 

Regards,

Sajal