It seem that Marcelo Boveto Shima had a temp fix for NX sessions https://bugs.launchpad.net/ubuntu/+bug/221363 https://bugs.launchpad.net/ubuntu/+bug/221363/comments/23
At least it work in my environment.
It seem that Marcelo Boveto Shima had a temp fix for NX sessions /bugs.launchpad .net/ubuntu/ +bug/221363 /bugs.launchpad .net/ubuntu/ +bug/221363/ comments/ 23
https:/
https:/
At least it work in my environment.