I noticed that Condorcet_rat.aut and birkhoff6.aut tests failed when I tried rebuilding Normaliz with Nauty 2.9.0, released just a couple of days ago. Full build log is here: https://github.com/Macaulay2/homebrew-tap/actions/runs/16397880778/job/46332980373#step:8:2149
I also attached log of the two test failures.

failures.log