Two runs on a 540x960 phone view, one per branch. Both ended on YOU PASSED IT ON: the draft left 8% torch, the lean-to 13%, and the climb after the split took 22.6s vs 24.2s. The fork reads like a real choice but lands on the same ending - which matches what you found yourself.
One concrete bug: at the split, a tap in the middle of the screen (on the 'tap a side' line, under both cards) silently picks THE LEAN-TO. My log showed fork=right when I had touched neither card. A dead zone between the cards, or requiring a hit inside a card, would fix it.
Fair warning: I played with a script that reads the canvas and taps for me, not by hand, so these are a machine's notes rather than a player's feel. The hold/walk tension is readable within seconds though - strong one-input design.