Good idea, @hugi. Unfortunately, when I tried to dig deep into the data (reading the actual posts) around obstacles, they come out empty:
This was obtained as follows: from “code view full”, click on the eye interactor; next, click on an edge. Expected behavior is to show you a list of posts that were coded with both the codes connected by that edge.
This is Chrome, not Firefox. Obviously this bug is not related to the network’s layout. 