Yesterday, I finally saw this nose-standing that everyone is on about (have got pics but not got as far as t/fing them from PS) and, as others have seen, it is happening at the top of the hill coming into Casino. I saw the car in front do a nose stand.....thought WTF!.....then I applied the brakes and turned (I like braking late) and the car just rolled....and rolled...and rolled. The car reset and I kept going and tried going round the hairpin, went over the kerb....and rolled!!
Looking back at the replay, it showed that my car did a nose stand which then converted into a roll as I was braking and turning, so the rolling part makes sense, maybe not the nose stand. AFAIK this is the only car and time it has happened (though I don't usually watch replays) and I certainly haven't noticed it with AI cars previously. FYI: On this occasion I was using the Alfa Mito 1.4 09 (prize car) modified with all weight reductions, brake kit, various power upgrades, racing soft suspension and sports soft tyres. I wonder if the soft suspension is a contributing factor to this, combined with the lightness of the car and the grippiness of the tyres? Though there can be no excusing nose standing regardless of upgrades etc used.
It does seem to be an issue where there is any uphill section (no matter how steep) that becomes flat when the brakes are applied (Monaco and Matterhorn are clearly pretty steep, though Tokyo has a fairly shallow incline there). I will be checking replays more often to see where is this is happening but, apart from the Monaco occasion, I have never had an issue with the car suddenly behaving strangely like this