Thank you for contacting us.
We would like to kindly explain that only the HTML element used as a container for WebDataRocks instance is affected while opening the full-screen mode. Being placed into another container, Google Charts will be hidden as well as the rest of the page.
As a workaround, we can recommend implementing your own function that would handle entering the full-screen mode. We have prepared a sample in order to demonstrate one of the possible approaches to achieve that.
The idea is to wrap both WebDataRocks and Google Charts container with another HTML element and override the handler of the “Fullscreen” button of the Toolbar in the way it opens the mentioned wrapper in the full-screen mode.
Please check out the page from our documentation dedicated to the customization of the Toolbar.
We hope it helps.