Tiago,
Here a small example that causes the graph to crash on v2.23:
from graph_tool.all import *
import graph_tool as gt
g = gt.collection.data["celegansneural"]
interactive_window(g)
Once the window comes up, make sure you maximize it, and then start moving the roller up and down to zoom in/out rapidly.
The crash behavior is very erratic, in the sense that sometimes it crashes immediately, and some other times you have to keep zooming in/out for a few seconds. But it is important to maximize your window (on smaller windows it does not happen).
Coincidentally, is there a way to install previous versions of graph-tool using apt-get?
Regards,
Vaggelis