This is only a cosmetic problem and does not really affect the quality of the parts.
There are no significant underextrusions or overextrusions which would affect the structural integrity of the parts. However, I would like to get a better surface finish for my decorative prints.
The problem:
The external perimeter line starting from the seam has a slightly higher/lower width, which makes a visually unpleasant line. This happens only if the perimeter line started from unretraction.