Interestingly, now that I look closer, I do see a slight issue in the first photo… but only on when it’s travelling in a certain direction. Maybe it’s the shadow highlighting it, but it does seem to show up on the surface as well.
I thought maybe those corners lined up with the start points of the cut, but not exactly. The blue circle on the left most shape is the start point for that shape, but for the triangle it’s the top corner, not the circled one.