Different time windows share the same graph. Example python code issue

[myrainbowandsky]

python 3.8.15
ubuntu 22.04.1 LTS

coord_net_tk.compute_networks.compute_co_similar_tweet(db_name, n_threads=50, time_window=55)

similarity_graph1 = coord_net_tk.graph.load_networkx_graph(db_name, "co_retweet")


coord_net_tk.compute_networks.compute_co_similar_tweet(db_name, n_threads=50, time_window=5)

similarity_graph2 = coord_net_tk.graph.load_networkx_graph(db_name, "co_retweet")

similarity_graph1 and similarity_graph2 are identical.

What happened??