When you try to wallride, sometimes you go in the opposite direction. *vid kinda related*
I couldn't really capture footage of me doing that.
Edit 2: It happened to me once or twice though, i'll try to replicate it on PC
This is intentional. Wallride direction depends equally on your current velocity and the direction you're pushing towards, the latter of which can get quite fuzzy on touchscreen.
I see. Thanks for clearing that out.