Roblox GC issue

.lua

local function new()
	local ref = {instance = Instance.new("TextButton")}
	ref.instance.Parent = workspace
	
	local function updateRefStrength()
		if game:IsAncestorOf(ref.instance) then
			setmetatable(ref, {})
		else
			setmetatable(ref, {__mode = "v"})
		end
	end
	task.defer(updateRefStrength)
	ref.instance.AncestryChanged:Connect(updateRefStrength)
	
	ref.instance.Activated:Connect(function()
		print(ref.instance.Name)
	end)
	
	return ref.instance
end

local ref = setmetatable({new()}, {__mode = "v"})

delay(5, function()
	print("moving to nil!")
	ref[1].Parent = nil
end)

while ref[1] do
	print("still alive...")
	wait(1)
end
print("gone!")