I've had pi 2's from both RS and element14 both arrive in box in un sealed antistatic bags.
Just got a Pi 3 from element14 that was in its box but this time internal packaging a thick paper or thin card pouch just held closed with a wire type clip.
So yes not being in a sealed bag is normal, it may not even be an antistatic bag now.
We want information… information… information........................no information no help The use of crystal balls & mind reading are not supported