Looked at the design on Tajima and enlarged it, and it's easy to see what you mean. The explanation from bowlds seems likely, as a wide satin stitch might cause problems without the stitching lines on top of the satin stitches. Have not stiched it out, though.
How did they turn out? I'm sure they look great.
Hugs and love,
You may be referring to one from Bunny Cup. The final stitch goes right thru the middle of the finishing satin stitch. I think some digitzers do this to keep a wide satin stitch more sturdy. I think it's a good idea myself.
As well as being decorative.
That is the exact design I was doing! Thank you. If felt it was a little odd that the tail is outlined, by not the rest of the elephant.