Hi Oliver, thank you for testing and reporting back, much appreciated!
Since I can reproduce the odd indentation with groff 1.23.0 I'm curious which version of groff you are using and whether you have any groff related environment variables or settings that could affect the output. I double-checked my groff setup and installations and while my standard groff is a custom built one with environment variables set for further customisation my fallback groff is the stable version 1.23.0 with the only following added man.local and mdoc.local in site-tmac: https://github.com/NixOS/nixpkgs/blob/master/pkgs/by-name/gr/groff/site.tmac Best Alexis
