Which connection manager are you using? Butterfly or Haze? And which version?

Thanks for your immediate interest.
I use telepathy-butterfly 0.3.3

I'm sure the bug is in empathy because I replaced empathy from 2.27 to 2.26 (with all libempathy*) and it works.

I've just installed 2.27.2 and it seems good for me, sorry

It happened again...

I'm now on 2.27.2 the behavior is strange:
- 1st run: users never shown
- quit empathy
- wait 30 seconds
- start it: users not shown again
- quit empathy
- immediately reopen it: users shown

and I can't open a chat window with any user (when they show online)

Also nothing happens if the users start to send messages: it seems that the chat window simply can't open).

I can reproduce this issue with Master and butterfly.
Raising the priority as that's a very nasty regression.

Thanks

Butterfly doesn't fire the SimplePresence.PresencesChanged signal. I filed https://bugs.freedesktop.org/show_bug.cgi?id=22172 about that.

I let this bug open for now while we are not 100% sure that's the reason of this problem.

This bug has been fixed in master telepathy-butterfly. Thanks for your bug report.