I thought just for fun I'd enter in some commands, but ever since I haven't been able to remove the console.
I tried Ctrl + L, ~, disabling it. Nothing.
I can remove it with Ctrl + L for a brief time until I click with my mouse then it brings it up again.
I even exited my world and shut the game down and it's still doing this. It's kind of annoying and prevents me from being able to play the game.