Version 29 of ngspice has been released on October 27th, 2018. Announcement: http://ngspice.sourceforge.net/index.html Release Notes: https://sourceforge.net/projects/ngspice/files/ng-spice-rework/29/ReleaseNotes.txt Currently, Fedora still ships ngspice 28 from June 2018. Please update the package to the latest version.
Once pushed into rawhide. Thank you for report.