Version was the problem! We have multiple versions and for some reasons I didn’t use the latest one.
It failed with 1.9.2 but from 1.9.8 it seems to be working as expected ;)
Thanks Indranil, I know about html2canvas but for me it’s an ugly solution to use another plugin just for adding padding around container. In my opinion cavnasJS is a nice and complex plugin, just this one think…
I definitely suggest adding this standard functionality to the next upgrade!