Help and other documentation wildly out of date
The Help content for even the most recent versions of the tool (krb5-auth-dialog-44.0~alpha1-1.fc38.x86_64
in Fedora) is wildly out of date, showing GNOME 2 (!!) screenshots and describing features (systray icons) that no longer exist.
Meanwhile, the website link in the app's About dialog points to https://honk.sigxcpu.org/piki/projects/krb5-auth-dialog/ which is slightly less outdated (it at least shows very old GNOME 3 screenshots), but still links to the old GNOME Git instance and GNOME bugzilla, both of which are no longer in use.