
How do I get rid of that, and make the whole screen a GUI? The frame size is {1, 0}, {1,0} and I did disable the CoreGuis using this script:
local startergui = game:GetService("StarterGui")
startergui:SetCore("TopbarEnabled", false)

How do I get rid of that, and make the whole screen a GUI? The frame size is {1, 0}, {1,0} and I did disable the CoreGuis using this script:
local startergui = game:GetService("StarterGui")
startergui:SetCore("TopbarEnabled", false)
In your ScreenGui, set IgnoreGuiInset to true.
https://developer.roblox.com/en-us/api-reference/property/ScreenGui/IgnoreGuiInset
Also, instead of using SetCore, do this
local StarterGui = game:GetService("StarterGui")
StarterGui:SetCoreGuiEnabled(Enum.CoreGuiType.All, false)
IgnoreGuiInset, maybe use that?
I could be speaking nonsense but Ive heard it somewhere
Likee @jmesrje said, in the screengui, put it to true
You cant hide the Roblox button.
However, use SetCore with the key “TopbarEnabled” to hide the other buttons, and Gui.IgnoreGuiInset to make it fill into the 36 pixels