My airframe shows some 10+ hours of flying to date, and for the 10 hours of flying I definitely DID NOT encounter this strange problem, whether taking off from rough or even runways. I have been doing quite a lot of flights from dirt strips that's bumpy though.
And as mentioned in earlier post, if there is any suspect, it would be that I have been alternating my bush flying with the RealAir Scout, which requires realism setting for P-factor and Torque at no more than 50%. There were a couple of occasions when I forgot to set those back to 100% when getting back in the Cub, though subsequently I did set those back to 100% when flying in the Cub. It's roughly around that time that I saw this problem.
And this problem could be experience even on International runways that are definitely even and smooth ! It's a problem that seems intermittent though (meaning it was observed on some smooth runways, but not others). (No passenger, just a full baggage load, with pilot of course
As for the modelling of flat tires, is that really so? I don't read about this in the manual. The effect seen indeed felt just like that of a flat tire, in this case a flat left tire. In fact I was thinking it would be so cool if tire damage and wear and tear could be modelled as well, with feature to "change tire" in the Accu-Sim pop up. That would be really nice !!
In any case, it is a very real and annoying problem. It is what I would call a "show-stopper", at least in my opinion, and I really hope a fix could be found soon and included in the upcoming fix. Thanks.