Hah, yes! I've yet to actually learn 让 (or rather, I keep relearning it and then forgetting what it is again). I did see this on Wiktionary while copy-pasting it, though, which I thought was interesting and at least explains why it ended up like that:

让: "Simplification derived from various Wu dialects, in which 上 and 讓／让 are homophonous."