Is the "bounce back and forth mode" supposed to be inconsistent when bouncing off each edge? Bouncing one way appears to add an extra note, when the pattern is

Is the "bounce back and forth mode" supposed to be inconsistent when bouncing off each edge? Bouncing one way appears to add an extra note, when the pattern is resetting. Example: https://draw.audio/s/z2gcctra8 https://draw.audio/s/z2gcctra8