That's a start to a delamination. Don't shoot it that way. Glue and clamp as suggested. You might also consider adding another piece of glass, or glass cloth to reinforce the area. A little epoxy and fiberglass cloth from the tip to about 1 1/2 inch below the nock would be about right. You might pick up a scrap of fiberglass cloth from a boat/canoe repair shop if there's one in the area. After filing and sanding off the hardened excess, be sure to sand the string string grooves so there's no rough or high spots. Do the same thing to both limb tips, even the other doesn't show damage. Good luck.