Documentation for “SetBubbleChatSettings” does not include information on valid keys that can be used in the dictionary you are meant to pass to the function.
The missing documentation can be found here. I shouldn’t have to rely on the Wayback Machine to edit bubble chat in my place.
(Yes, I know LegacyChatService is deprecated, but documentation should remain available.)
Affected URL: Chat | Documentation - Roblox Creator Hub