irssi 0.8.16 has been released. http://irssi.org/news/ChangeLog
irssi-0.8.16-1.fc20 has been submitted as an update for Fedora 20. https://admin.fedoraproject.org/updates/irssi-0.8.16-1.fc20
irssi-0.8.16-1.fc20 has been pushed to the Fedora 20 stable repository. If problems still persist, please make note of it in this bug report.