TextChat firing twice on client.. not sure why

[Just2Terrify (J2T)]

I’m currently learning how to mess with the new chat system and for some reason… even when i fire an event… the TextChatService fires twice.

Here’s a download of the place to mess with, and the scripts are below.

MICSETUP.rbxl (212.3 KB)

Server Script in ServerScriptService

local micEvent = game.ReplicatedStorage:FindFirstChild("MicrophoneEvent")

if not micEvent or not micEvent:IsA("RemoteEvent") then
	return
end

micEvent.OnServerEvent:Connect(function(plr,userInfoFromText,msg)
	warn(msg)
end)

Local Script in StarterPlayerScripts

--[[Made by Just2Terrify]]
local TextChatService = game:GetService("TextChatService")

TextChatService.OnIncomingMessage = function(msg:TextChatMessage)
	if script.Parent.Name ~= "PlayerScripts" then
		return
	end
	
	if not msg.TextSource or not game.Players:GetPlayerByUserId(msg.TextSource.UserId) then
		return nil
	end
	
	if game.Workspace:FindFirstChild(game.Players:GetPlayerByUserId(msg.TextSource.UserId).Name):FindFirstChild("Microphone") then
		local Event = game.ReplicatedStorage:FindFirstChild("MicrophoneEvent",true)
		if not Event or not Event:IsA("RemoteEvent") then
			return nil
		end
		Event:FireServer(msg.TextSource,msg.Text)
	end
	
	if msg.TextSource.UserId == 678299 or msg.TextSource.UserId == -1 then
		local chatProperties =  Instance.new("TextChatMessageProperties")
		chatProperties.PrefixText = `<font color= "{"#FF007F"}">[The Developer]</font>{" "..msg.PrefixText}`
		return chatProperties
	end
	
end

[Just2Terrify (J2T)]

When bound to the client sending a message, this callback is run twice; first when the message is initially sent and received locally, and again when the client receives the result of the filtered message from the server.
As shown in the TextChatService documentation for OnIncomingMessage