The symmetries implemented in CartGrid3D (bitant, quadrant, and octant mode) do not work with Carpet-HG. They register a symmetry width equal to the number of ghost zones, but do so at a time when the number of ghost zones is not defined. They should instead query CoordBase for the number of boundary points. However, this may break many old parameter files that e.g. use PUGH.
Another alternative would be to always use ReflectionSymmetry with Carpet-HG instead of CartGrid3D's symmetries.
This affects currently e.g. the test case EinsteinAnalysis/AHFinderDirect/test/Kerr-Cartoon.