Now to stop this shirt from doin all this pinching… |
It could be related to the same problem, the back panel of the shirt is still inside-out, that could confuse the seams. To make it right properly, you will have to go back a few steps, to the placing panels bit and rotate the back panel 180deg, re-apply the seams, re-sim.
I often go back and re-do the sim after editing the spline when making garments. They dont always fit well at first, so you have to go back to Edit Spline and tailor them to fit better.