Make sure you are not pulling the yarn UP, because then it does look like 2 stitches, not one, because you're seeing the stitch below the needle. Put the yarn in front, then pull it gently DOWN and you will see it is just one stitch.
Knitting homeschooling mom to 3 kidlets
Bayerische Socks by Eunny Jang in Knit Picks Risata (for ME!)
in queue: Swirl glittens; lacy raglan for me; new cabled sweater for dh