Anyone have a new solution to this? Return though can be set will not wont work.
local TextChatService = game.TextChatService
local ChatInputBarConfiguration = TextChatService:WaitForChild("ChatInputBarConfiguration")
ChatInputBarConfiguration.KeyboardKeyCode = Enum.KeyCode.Z
This works but it will not work with Enum.KeyCode.Return
Edit: After almost a year of no progress I opened a bug report