I know they have those small 1/2" flaps of Mylar on the inside that get all twisted & let light through. They don't have the large 3" - 4" Flaps on the outside that Velcro shut on the outside though. The square door tents have both.Mine is awesome! The flap is on the inside, not on the outside.
Do you have a pic of the tent zippers with your grow lights on, Tent Closed & the room dark ?
I'll bet you find pin hole light leaks through the zipper. That's OK if you grow Auto's but not for Photo's.