Georg Pfuetzenreuter suggested that I share what the issue was, so here is what I found: A custom extension in our bugzilla deployment automatically adds the openSUSE bugs user to CC for bugs in openSUSE projects. Previously, the extension handled this through a regex, matching the string "openSUSE" in a project’s name, but this changed during the migration. Now, there is a database column for products which allows us to set the CC user for a product. Previously, no one set this column for the openSUSE products.