There is a very similar bug https://bugs.launchpad.net/ubuntu/+source/ubuntu-ui-toolkit/+bug/1518002 but with different apps listed that is fixed in the branch attached to that bug.
There is a very similar bug https:/ /bugs.launchpad .net/ubuntu/ +source/ ubuntu- ui-toolkit/ +bug/1518002 but with different apps listed that is fixed in the branch attached to that bug.