google_visualr Image Bar chart label not in place

I am using google_visualr gem. The GoogleVisualr::Interactive::ColumnChart generating correct chart but in GoogleVisualr::Image::BarChart labels are not on the right place in images. See below scrrenshots.

GoogleVisualr::Interactive::ColumnChart

GoogleVisualr::Image::BarChar

Any suggestion that how can i render chart with my html data? where i am going wrong?

I am using rails 3 and 'google_visualr', '>= 2.1'