I've tried to reproduce this bug with Xenial in a VirtualBox VM today, and it didn't come up. After installing kubuntu-desktop and reboot, lightdm came up and not sddm. Seems like Flames_in_paradise assumption is correct and the bug is fixed upstream.
I've tried to reproduce this bug with Xenial in a VirtualBox VM today, and it didn't come up. After installing kubuntu-desktop and reboot, lightdm came up and not sddm. Seems like Flames_in_paradise assumption is correct and the bug is fixed upstream.