Glad you brought this up. I've had this happen to me a lot before the patch. I'm not 100% sure why the wall version doesn't always occur even though Wall 46T works on pretty much every structure/railing, but these are my two guesses:What else i noticed about walls... Jacky's 46T won't wall splat properly even if your opponent is behind a wall. I was on the stage where Brad Wong and Eliot fought in the house, on the outside of the area, and i did 46T to the opponent. He was LITERALLY behind the wall and it didn't wall splat.
1.) I've had it happen to me the most when I do 46T on the opponent immediately after hitting them. For example, when the opponent's back is to the wall, hit them with P,K or P,K (puts you at +10) and then immediately input the 46T throw. Sometimes I get the wall version, sometimes I don't, even though I looked perfectly aligned. It might even occur more when I'm in Open Stance, but I'm not 100% on this.
2.) This occurrence might only happen on certain stages. It happens to me the most on "Coming Soon", which is full of different-sized walls and railings. I've also had it happen to me on a few sections around the outside of Home, just like you.
Good find.However, they totally forgot to adjust the identical , String