Grids Not Visible on Android

I am getting reports from some of my testers that they cannot see the charts. The frame is there and the backgrounds are there, but the lines and pie slices are not there. To make sure it was not just my site, I had them go to the kendo dataviz demos and those are not available either.

I have confirmed this is the case on my personal phone which is android 2.3.4.


Is anyone else experiencing this?