I’m hitting the 3.2.1 bug, but no upgrade is available:
root@maas:/etc/apt/sources.list.d# cat maas322.list
deb https://ppa.launchpadcontent.net/maas/3.2/ubuntu focal main
deb-src https://ppa.launchpadcontent.net/maas/3.2/ubuntu focal main
root@maas:/etc/apt/sources.list.d# apt-cache -a show maas-region-controller | grep 3\.2
Version: 1:3.2.1-12003-g.e0fedd282-0ubuntu1~20.04.1
root@maas:/etc/apt/sources.list.d# dpkg -l | grep maas-region-controller
ii maas-region-controller 1:3.2.1-12003-g.e0fedd282-0ubuntu1~20.04.1 all Region Controller for MAAS
root@maas:/etc/apt/sources.list.d# apt-get install maas-region-controller
...
maas-region-controller is already the newest version (1:3.2.1-12003-g.e0fedd282-0ubuntu1~20.04.1).