Yorick's W makes Kled's Ult bug out even after the wall goes down

Just had the same bug happen to me twice in a game as Kled against Yorick. At first I thought I just ulted while the wall was up, but it happened against after I made sure to wait for the wall to go away. I get that Kled's ult redirects if terrain is created by a champion, but something about Yorick's W makes this happen even after it has been destroyed or goes away naturally.