Please make sure your system is fully up-to-date. Especially make sure your systemd package is 237-3ubuntu10.22 or newer. Now check your network-manager package. If it is not 1.10.14-0ubuntu2 (probably it is 1.10.6) update it from bionic-proposed as described in comment #11 of bug #1754671. Then reboot. Now check whether the problem does not occur any more for you, for example by doing the steps of the section "[Test case]" in the description of bug #1754671.
If the problem still persists, follow the instructions of my comment #9. Also post the output of
Please make sure your system is fully up-to-date. Especially make sure your systemd package is 237-3ubuntu10.22 or newer. Now check your network-manager package. If it is not 1.10.14-0ubuntu2 (probably it is 1.10.6) update it from bionic-proposed as described in comment #11 of bug #1754671. Then reboot. Now check whether the problem does not occur any more for you, for example by doing the steps of the section "[Test case]" in the description of bug #1754671.
If the problem still persists, follow the instructions of my comment #9. Also post the output of
systemd-resolve --status
here.