Hello, I'm trying to draw hierarchy from a NestedBlockState made like this <NestedBlockState object, with base <BlockState object with 2263 blocks (91 nonempty), degree-corrected, for graph <Graph object, directed, with 8272 vertices and 52548 edges, 1 internal vertex property, at 0x128d14110>, at 0x13ffa8f10>, and 10 levels of sizes [(8272, 91), (91, 34), (34, 10), (10, 3), (3, 2), (2, 1), (1, 1), (1, 1), (1, 1), (1, 1)] at 0x128cca590> when I run state.draw(output='foo.pdf') I obtain a picture with colored nodes on the outer circle, the hierarchy path but no bezier curves for edges. I've tried to draw only levels > 0 (so 91 nodes here) and it works like in graph_tool documentation examples. In order to draw edges I had to use gt.graph_draw passing edge_control_points (from gt.get_hierarchy_control_points). Is there some threshold in gt.draw_hierarchy that sets edge visibility if over/under a certain number of blocks? graph_tool 2.30 here Thanks d