These changes are necessary. Need to mark vertices of edges passed in geom; also the normals.out slot has a custom element type, not ELEM, so need to prevent attempt by python code to convert it to an elem. But this leaves a memory leak. I will rework code to not use normals.out slot at all, but that's a bigger fix. Now there is a crash in a different place (GPU code). Think that if using Op on its own (instead of from edbm_bevel_calc, there needs to be a dependency graph update and maybe more?