When looking into a polygon, the constituent geometries print as linear rings but possess LineStringTraits. This is a problem "upstream" in GeometryOps when reconstructing geometries from ArchGDAL inputs.

Consider the following MWE:

import GeoInterface as GI, ArchGDAL as AG
polygon = GI.Polygon([GI.LinearRing([(cos(t), sin(t)) for t in LinRange(0, 2pi, 100)])])
GI.geomtrait(GI.getgeom(polygon, 1)) # LinearRingTrait
ag_polygon = GI.convert(AG, polygon)
GI.geomtrait(GI.getgeom(ag_polygon, 1)) # LineStringTrait

@which GI.geomtrait(GI.getgeom(ag_polygon, 1)) reveals:

which seems incorrect...