Steps to reproduce:
1. Share your screen with a friend
2. Check "Enable desktop remote control" while it is still ringing (before your friend answers the call)
3. Ask friend to try to control your computer
Expected behavior: Friend should have remote control of your computer
Actual behavior: Friend does not have remote control of your computer.
Workaround: After your friend as answered the call, uncheck "Enable desktop remote control" then recheck it.
Tested using Jitsi 1.1.4462.10430, Windows 7