Hi, I hit this bug and was able to reproduce it with the following steps :
- add to sources.list: deb cdrom://[Debian GNU/Linux 11.2.0 _Bullseye_ - Official amd64 DVD Binary-1 20211218-11:13] bullseye Release - make a change in software-properties-gtk, e.g. enable contrib - click the "Close" button - click the "Refresh" button I applied the proposed path that fixed the issue for me. Cheers
