I would like to report a bug in jitsi i have found recently.
When using XCAP server as main contacts storage for sip account after some
time all contacts statuses added by XCAP are turning gray and jitsi says
they all are offline however they are not. To bring back proper contacts
status user needs to restart jitsi.
How to reproduce:
1. Configure jitsi to use XCAP
2. Wait some time ( usually happens after 2h or more)