Could you be a bit more specific about how to tell when it is on v11 vs v12 stack. I know it was mentioned before, but scrolling through hundreds of posts...
I am asking because I am still seeing V12.3.1 still have difficulties with a particular freeway merge where the on-lane quickly turns into an off-lane. Sometimes it makes the merge, sometimes it takes the exit, and some times it drives into the thick white line triangle gore area and then swerves out, one way or the other. Stuff happens fast, but I'd like to know if it V12 messing up or not. V11 had the same problem. There is plenty of room for human drivers to merge, so this is an FSD problem. Hopefully it is a V11 issue, soon to be moot.