*Banana in shining armor!
I get what you mean. Each loop should get a bar, but it's likely that the extra stitch is really somehow one stitch that got twisted or picked up twice. Is it really a major problem? I wouldn't think it would show on a scarf unless you lay it out flat and examine it.
I've always fixed things, preferably on the knit side, with a crochet hook--let the stitch ladder down and bring it back up. Staring never worked very well for me. :rofling: sorry--couldn't resist.