I'm so glad you liked it! And yeah, I instinctively pressed tab a ton of times when I was making/testing it. Would for sure be something I add to a full(er) version.
That chop off thing is a known bug, it's due to the way text is (dumbly) cached to avoid re-drawing. I actually thought I had gotten rid of it but apparently not. Fortunately you don't need to go into that directory to complete the tutorial!