Part not loading with model (even tho it exists?)

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#1 
if not self.Instance:FindFirstChild("RootPart") then
	warn(self.Instance)
	self.Instance.Name = "ERWERREREERERER"
	task.delay(1, function()
		print(self.Instance.RootPart)
	end)
end

Unsure why it warns with the name changed… even tho I change name after warn.
image

But if I task.delay it shows RootPart is there.
image

Game has StreamingEnabled false, so there’s not Atomic or whatever issue here. I spawn in thousands of these, but I always get 2-3 warnings each time. And when I check workspace, the RootPart does exist. There is NEVER a case when it doesn’t exist

WaitForChild does fix the issue, but this should not be necessary

#2

This has to deal with how server and client communicate with each other to the instance. From what I know off the top of my head some stuff on the Client-side may not be fully loaded in when a player loads into an instance. So you should yield the object until it is fully loaded in on the client side. Server-side is always prioritized in loading if im correct.

#3

Instead of the task.delay you can just do self.Instance:WaitForChild(“RootPart”)