Broke it with "Tentacle erotica". It leads to "Gothic fiction" and eventually goes into a loop. However, that's because on the "Gothic fiction" page, clicking "literature" leads you to... "Gothic fiction" (seemingly because of an event in the past where the "Gothic fiction" and "Gothic literature" [where it tries to go] pages were merged). If it brought you to the actual literature page it would eventually end up at philosophy. Clicking the second link on the Gothic fiction page, "horror [fiction]", eventually loops as well, so there's something that seems to genuinely break it.
I think we can say: pages either eventually link to philosophy, or end up looping.