Pushing left and right to struggle does not work, and actually makes the resist bar go the wrong direction when in trace.
You must only push the struggle buttons when the bar is green. If it's pink, don't touch. There is a short grace period after the green turns to pink, but not very long.
Ah, thank you. A pretty basic oversight on my part. I hadn't noticed that the bar now has inertia and required some faster presses to work.