EDIT: THIS HAPPENS FOR EVERY WORLD edit 2: it works on non-forge for some reason
It could just be a problem with forge itself with interfering with the Minecraft worlds, make sure the version you installed was stable and any other mod for it doesn't do the same thing.
Everything works perfectly fine, all the World Edit commands are working, but they don't show up in the chat.
What do you mean by not showing up in chat? You mean that it's not telling you that the command executed, or it won't show the autocomplete of it in the command bar.
If it's the first one, maybe it's your chat settings or a new update rolled out that removed that feature.
