fix [#35507] BMesh module: Crash on to_mesh() if faces.layers.tex is used but no loops.layers.uv

source/blender/python/bmesh/bmesh_py_api.c

@@ -138,6 +138,12 @@ static PyObject *bpy_bm_update_edit_mesh(PyObject *UNUSED(self), PyObject *args,
 
 	{
 		extern void EDBM_update_generic(BMEditMesh *em, const bool do_tessface, const bool is_destructive);
+		BMEditMesh *em = me->edit_btmesh;
+		BMesh *bm = em->bm;
+
+		/* python won't ensure matching uv/mtex */
+		BM_mesh_cd_validate(bm);
+
 		EDBM_update_generic(me->edit_btmesh, do_tessface, is_destructive);
 	}