A Major Bug! Simple Messenger suddenly not there

I used user A and went to Profile B to use the simple messenger. However, after closing the messenger and refreshing the page the option to chat under the actions block is gone!

Confirmed with demo and my own site.

I also noticed that the next time the user logs in or minimizes the Simple Messengers, the "heading" or "Motto" under the nickname disappears.

This needs to be fixed

Edit: Using the new 7.1 Beta 2

the chat option is only visible when someone is online and by default it's set to 1min so maybe it timeout before you refreshed the page.