Chat populating with blank messages

Help and Feedback Scripting Support
#1

I have a game that adds a few lines to the base “DefaultChatMessage” script. Despite very little changes - and a 99% success rate - there is this bizarre bug where the chat window becomes increasingly populated with blank messages.

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(the scrollbar is unusable despite the chat being filled beyond the few messages shown)

Here are the changes I made to the script:

function CreateMessageLabel(messageData, channelName)

	local fromSpeaker = messageData.FromSpeaker
	local speakerName

	if ChatSettings.PlayerDisplayNamesEnabled and messageData.SpeakerDisplayName then
		speakerName = messageData.SpeakerDisplayName
	else
		speakerName = fromSpeaker
	end
	
	local speakerUserId = messageData.SpeakerUserId
	if IsPlayerVerified(speakerUserId) then
		speakerName = AppendVerifiedBadge(speakerName)
	end

	-- my changes
	local speaker = PlayersService:FindFirstChild(fromSpeaker)
	if speaker and speaker ~= localClient then
		if not speaker:GetAttribute("InGame") and localClient:GetAttribute("InGame") then
			if localClient:GetAttribute("Role") ~= "Medium" then
				return
			else
				messageData.ExtraData.NameColor = Color3.fromRGB(77, 77, 77)
				speakerName = "💀 Dead Player"
			end
		end
	end

...

Any ideas how I could fix this problem?