When you run a race in Monza with rolling start (tested with GT3 cars) IA cars swaps position between right and left sides at the start of formation lap, and that could cause a lot of issues and a little chaos..
Yes, I noticed that, at the very least, the second-placed starter moved to the wrong side. I have only done one start on this track, and it was before the AI hotfix.
I have taken a quick Look at it and the Grid Positions have no Waypoints generated, so the AI can not be positioned properly. That normally can be fixed with the "reset special waypoints" Functionality and should be done by S397 of course.