Quick fix: If the wrap is missing, pick up the horizontal bar at the base of the stitch with your right needle and place it on the left needle, then work it together with the stitch it wraps.
What you are seeing
A visible hole or bump appears at the short row turn point, or you have an extra stitch where you shouldn't. Wrap and turn (W&T) short rows require the wrap to be picked up and worked together with the wrapped stitch on the return row — if this step is missed or done incorrectly, the turn leaves a gap.
Why it happens
- Forgetting to pick up the wrap when you return to the wrapped stitch
- Picking up the wrap from the wrong direction (resulting in a twisted stitch)
- Wrapping the wrong stitch or turning one stitch off from the correct position
- On purl rows, wrapping in the wrong direction
Fix it now
- If you forgot to pick up the wrap and notice right away: unknit back to the wrapped stitch. Insert the right needle under the wrap (from bottom to top on a knit row), place it on the left needle, then knit the wrap together with the stitch.
- If a hole is already showing several rows later: drop down to the turn row. Use a crochet hook to pull the wrap up through the stitch, closing the gap, then re-knit back up.
- If you turned in the wrong place: rip back to just before the W&T and work it again in the correct position — count stitches from the edge carefully.
Prevent it next time
- After each W&T, place a locking stitch marker on the wrapped stitch so you can't miss it on the return row
- When approaching a wrapped stitch: look for the bar at the base of the stitch before knitting it
- Consider switching to German short rows — many knitters find them easier to execute consistently