I think the fix is obvious, but the case a bit special without (me) knowing how to reproduce. So an MP for review comments is up at [1] to gain more confidence before uploading for an SRU.
[1]: https://code.launchpad.net/~paelzer/ubuntu/+source/mailman/+git/mailman/+merge/332798 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1251495 Title: Lists with topics enabled can throw unexpected keyword argument 'Delete' exception. To manage notifications about this bug go to: https://bugs.launchpad.net/mailman/+bug/1251495/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
