@Leo_the_Lion25 Well, yeah, I don't know exactly why his increased climb speed prevents him from wall jumping, but I was fairly sure that it was the climb speed anyway.
You did kind of insult me: "Sir_Named doesn't know what he's talking about." Sound familiar? But if you insist it wasn't an insult, I'll let it go.
I did answer it in the end. It may not have been the best answer, but it was at least something. "It probably has something to do with Revenant's climb though." That is an answer. And it seems like you agree. So I seem to be correct.
I usually write with stuff like "probably" in case I am wrong. In this case, I wasn't 100% sure why he couldn't wall jump, but I had a strong suspicion it was the climb speed.