Ah, I see the option now, which appears to be on by default. The test VM I just set up (a clean install from ubuntu-gnome-16.04-desktop-amd64.iso) doesn't copy or paste from host to guest or vice versa. I would be happy to log an issue in Github, is there any debug info I should provide?
I reached out to get their unreleased fix for this, after combing through the knowledgebase[1] and it works! Overall it performs a little better than Virtualbox in general for me, so far.
