I’ve just released subiquity 20.05.1 to the stable channel, meaning that all users of the live server installer will be offered the upgrade during installation. You can see the changes in this update on github at:
This is the first release for a while to 18.04 users so you might want to read the other release notes too:
(although some of the new features like autoinstalls are not available on 18.04).
Thanks for all the feedback since the 20.04 release! Hopefully this addresses a good portion of the bugs that have been reported.