During lap 7, beyond the KOM, but before the big downhill (somewhere near a cabin on the left)(mile 22-23?)… Real riders (and I think AI) started to appear to cross quickly in front of me, at angles nearly perpendicular to the road.
They would come in to view, not from the side of the screen, but “appear”, and then they’d disappear before getting to the left edge of screen.
This seemed to go away within a mile. I was almost done for the day, at that point, so I didn’t see if it happened again on another lap.