plant re-vegging

I have a morning glory and several ak-48's growing in my flowering closet now for about 7 weeks. For some reason the morning glory buds are not as tight as the others and now it has grown a new shoot out the top of the main cola bud. the new growth has 3 sets of leaves/nodes. None of the other plants are doing this so I do not see how it could be any type of stress. anyone ever had this happen or has anyone ever grown a barney's morning glory?

Pictures!

What is your light cycle at? Did you check for light leaks?

12 on 12 off and no leaks. like I said none of the other plants are doing this