Viewport size and frame size discrepancy

[ghostbeater12 (pingles)]

In my game I have two text labels with two scripts, the first text label shows the players viewport size and the second shows the size of a frame I created which has a scale size of 1,1.

You can see that the frame Y size is 36 pixels smaller than the viewport size (I’m playing in fullscreen). I was hoping someone could explain why this is happening.

You can test it yourself here:

Viewport Testing

Script for the frame size

local Players = game:GetService("Players")
local player = Players.LocalPlayer

while true do
	wait()
	local AbsX = player.PlayerGui.FrameGui.Frame.AbsoluteSize.X
	local AbxY = player.PlayerGui.FrameGui.Frame.AbsoluteSize.Y
	script.Parent.Text =  AbsX .. " x " .. AbxY
end

Script for the viewport size

local Players = game:GetService("Players")
local player = Players.LocalPlayer

while true do
	wait()
	local ViewPortSize = workspace.Camera.ViewportSize
	script.Parent.Text = ViewPortSize.X .. " x " .. ViewPortSize.Y
end