Ok, Chico so on the basis that there are no alternative versions for catfish in the bionic repositories and you saw that "Force version" was not available, synaptic was working as intended so I'm closing this bug report by marking it "Invalid".
** Changed in: synaptic (Ubuntu) Status: Incomplete => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1788194 Title: Force version is not working in Synaptic Package Manager in XUbuntu 18.04.1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/synaptic/+bug/1788194/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs