Anything placed in the es-groups-after-stream module position is currently appearing BEFORE the "You need to login to read the rest of the stream items." message.
It should appear AFTER it.
For a real example of why this is a problem (any time that the module content is large) then please see the link I've provided (when not logged in of course!). The user won't realise that (s)he can see more stream items if they login because the message just gets lost - and if they are logged in, again the 'load more' button is so far away from the content it doesn't make sense!
Would really appreciate a 'hot fix' on my site for this one if possible! Thanks as always!