why does the tweening spin the parts around?

local tweenService = game:GetService("TweenService")

local door1 = script.Parent.Door1

local door2 = script.Parent.Door2

  

local tweeningInformation = TweenInfo.new(

1,

Enum.EasingStyle.Linear,

Enum.EasingDirection.Out,

0,

false,

0

)

  

local door1Close = {

CFrame = CFrame.new(-711.728, 7.94, -64.345),

Orientation = Vector3.new(0, 90, 0)

}

  

local door1open = {

CFrame = CFrame.new(-711.728, 21.77, -64.345),

Orientation = Vector3.new(0, 90, 0)

}

  

local door2close = {

CFrame = CFrame.new(-711.727, 7.94, -51.645),

Orientation = Vector3.new(0, 90, 0)

}

  

local door2open = {

CFrame = CFrame.new(-711.727, 21.77, -51.645),

Orientation = Vector3.new(0, 90, 0)

}

  

local tween1open = tweenService:Create(door1,tweeningInformation,door1open)

local tween1close = tweenService:Create(door1,tweeningInformation,door1Close)

local tween2open = tweenService:Create(door2,tweeningInformation,door2close)

local tween2close = tweenService:Create(door2,tweeningInformation,door2open)

  

script.Parent.Detector1.Touched:Connect(function(hit)

tween1open:Play()

tween2open:Play()

wait(2)

tween1close:Play()

tween2close:Play()

end)

  

script.Parent.Detector2.Touched:Connect(function(hit)

tween1open:Play()

tween2open:Play()

wait(2)

tween1close:Play()

tween2close:Play()

end)

it spins the doors to the orientation 0, 0, 0 why