Portal break when node=document.body

[hepiyellow]

Naively I set <Portal node={document.body} >... and it breaks with react 15 (works with 16).
When I say break, I mean that the portal content is replacing the body instead of appending to it.

Until I figured out that I can simply omit the node prop, and use react-portal's default behaviour.

I just thought this is something that might either require special code handling,
or at least a stronger mention in the documentation.

Thanks.