ubuntu pro updates displayed incorrectly on 20.04.5 LTS

[Lech Sandecki]

The list of Ubuntu Pro updates available is blank/white on white background, therefore unreadable.

20.04.5 LTS
lech@endurance:~$ apt-cache policy update-manager
update-manager:
  Installed: 1:20.04.10.11+ubuntupro1
  Candidate: 1:20.04.10.11+ubuntupro1
  Version table:
 *** 1:20.04.10.11+ubuntupro1 500
        500 http://ppa.launchpad.net/robert-ancell/ubuntu-pro/ubuntu focal/main amd64 Packages
        500 http://ppa.launchpad.net/robert-ancell/ubuntu-pro/ubuntu focal/main i386 Packages
        100 /var/lib/dpkg/status
     1:20.04.10.11 500
        500 http://gb.archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages
        500 http://gb.archive.ubuntu.com/ubuntu focal-updates/main i386 Packages
     1:20.04.9 500
        500 http://gb.archive.ubuntu.com/ubuntu focal/main amd64 Packages
        500 http://gb.archive.ubuntu.com/ubuntu focal/main i386 Packages

[Sebastien Bacher (seb128)]

Thanks Lech, you are using an old buggy version from Robert's ppa, that issue was fixing in the official SRU upload that you can get from https://launchpad.net/ubuntu/+source/update-manager/1:20.04.10.14