[graph-tool] vertex.in_edges() on undirected graphs throws a segmentation fault

This is python 2.7 and graph-tool 2.2.38_0 Code:

import graph_tool as gt

g = gt.Graph() g.set_directed(False) v0 = g.add_vertex() v1 = g.add_vertex() e01 = g.add_edge(v0,v1) v = g.vertex(0) [e for e in v.out_edges()] [<Edge object with source '0' and target '1' at 0x104d110e8>] [e for e in v.in_edges()] Segmentation fault: 11