There appears to be a bug in this version of librnd that prevents successful rendering with the default gtk 4 hid. In the short term, users can work
around the problem by installing librnd4-hid-lesstif and invoking the various ringdove tools with option --gui lesstif
This is clearly unacceptable for stable release, so until we can figure out
and fix the problem in librnd I'm filing this release-critical bug to prevent this version from promoting to testing.