I have just noticed that when i click play in roblox studio the chat filter is now working. I say the F word and it just comes up. Did i mess up a script?
The filter api does not work in studio. I assume the reason for that is so that the players can't obtain the filtering api endpoint with traffic proxy software.
If you really need to test filter in studio, toggle Team Create on and use Team Test mode. It runs your game on an actual roblox server so stuff like filter and require(id) works.