Screen sharing working fine via MRA. In some situations I've noticed that the button to stop sharing is greyed out. Sometimes it's when the other party on the call starts sharing before you've stopped. Sometimes it's while on VPN and sometimes it's when you share content to a 3rd party SIP endpoint or to a B2B participant. I'm having trouble reproducing the issue reliably but just wanted to see if anyone else has seen this issue. I have to log off Jabber and back in to get my screen-sharing capability back and once I had to reset Jabber and delete the AppData cached files. Using Jabber 11.9.2 with MRA only. CUCM/IM&P 11.5.1 SU3, Expressway 8.10.3.