Maybe old news here, but i was sad to see my little propagation graphic disappear.
Not to worry, as there seems a simple fix at https://z34pec.blogspot.com/2022/07/cqrlog-and-blank-propagation-page-af... I. have no idea if this little problem is common or just this v2.5.1
Everything works now, and i've been experimenting with the various variants suggested in the Propagation tab of Preferences. Fun and useful.
The only catch is that maybe not everyone is comfortable editing a binary executable with a hex editor. It's a really simple little change, but as ever, backup the /usr/bin/cqrlog file first!
The link above is a quote of the original post, so i don't know who to thank. Probably someone smart here. ;)
73, John KX4QC