I just tested this and here is my feedback, everything works except for one tiny issue that I'll explain.
Adding users of mixed status' to a group chat works perfect (online & offline users). The online users have the ability to add offline users now & when those offline users sign in they see the group chat open up on their screen. I can't thank you enough for adding this functionality! :D
I did find one small bug and can replicate it.
I will use an example of a simple 3 user group chat.
If I start a group chat with 3 users who's current status is "Online", and one of the Online users leaves the group chat, I can re-add them and they are allowed to see the chat contents and type in a reply without issue to continue on in the chat. The window to type in is white and they have the option bar to change font, add attachment etc.
If I start a group chat with 3 users and say one of the users are "Offline", when they sign on they are able to see the current group chat and reply which is good. The problem I encountered is if that user leaves and I re-add them. They can then view the chat but cannot type or reply to the conversation. The normally white window is gray/tan and does not allow the user to click within to type a reply. We did test attaching an image and using the buzz feature and the user can still use those features. (I have included a small screen clip of what it looks like from their side) I was able to repeat this only when the user's original status was Offline from when they were added to the group chat. Hopefully my log of how to repeat it helps with the solution.
http://i.imgur.com/Yg79qxO.jpg?1
I understand this is a completely new feature but I think once this small thing is worked out I am pretty much ready for purchase/deployment. :)
Thank you again!