See attachments for symptom.
These were captured on a Ubuntu Linux x86 (32-bit) machine running
latest Jitsi stable.
Chain of events for screenshot #1:
1. One of my contacts removes me from their contact list
2. I get a popup with no text in it.
I assume my authorization should not be required for anyone to remove
me from their contact list, so not sure what went wrong here.
Screenshot #2 (the second authorization window with no text in it)
occurred shortly (a few seconds) after that.
Let me know if logs or any other information would help troubleshoot this.