OS: Windows 7 Professional Service Pack 1 (64 bit)
1. With Jitsi showing, select a contact and press the "Send a message"
button. Observe that the "Send a message" chat window appears, as expected.
2. From the "Send a message" window, press the telephone-handset-icon.
Observe the Choose contact menu appears, as expected, but that the contact
name is listed three times.