Yes, this is the same issue Andrew and I were discussing. I could swear that this behavior has changed - when I initially released Human the “hatch table” component (which relies on this method) seemed to work consistently regardless of whether hatches had been placed in the document. It also behaves differently sometimes - with the same SR / version, HatchPatterns shows 1 item on my work machine and a full list on my machine at home, starting from an empty rhino document.