It's not normal but not necessarily abnormal either. When breeders breed autos, they try to minimize the ruderalis genes as much as possible. The plus side is that they do this to increase quality and potency. The negative side is that sometimes, they accidentally breed out the auto genes.
Your plant is showing as a female, so it does have signs of flower. Even photos can sex after 8 weeks in veg though. Flip to 12/12 and see if you just ended up with a photoperiod masquerading as an auto.