Looks like that's a byproduct of Notion's keyboard shortcuts. I agree it's very annoying. Not only does it break arrow keys, but also home, end, page up, and page down.
I remember in the beginning of Rap Genius it seemed like a lot of the lyrics were just scraped from OHHLA. I didn't even realize OHHLA was still around.
Click on "Get Started" and I have to fill out a survey? And after I finish filling it out, nothing happens. What a horrible workflow. I would expect that "Get Started" take me to installation instructions.