Just to follow on from TenLeftFingers, I was having this problem on every call. Specifically deleting ~/.config/com.ubuntu.dialer-app solved this problem for me (from https://bugs.launchpad.net/dialer-app/+bug/1548914)
Just to follow on from TenLeftFingers, I was having this problem on every call. Specifically deleting ~/.config/ com.ubuntu. dialer- app solved this problem for me (from https:/ /bugs.launchpad .net/dialer- app/+bug/ 1548914)