A few weeks ago, we noticed some issues with the submissions to the site. For instance, people were writing their entries in ALL CAPS! Or they were forgetting dates, or to submit a status "color" or something else. Or they were using the site to propagate political views. So I put a bunch of new filters in. (Note: if you're not a nerd, you can probably stop reading here.) And I asked people to report if the filters were causing any problems. I tried them, and they worked. But, as we all know, making any changes can create any number of other issues arise.
So I got an email from someone who was unable to submit. They sent me a screenshot:
and were receiving an error message to please TURN OFF THE CAPS LOCK key. I pretty quickly figured out what the problem was, and fixed it. So, before I tell you what it was, take a quick think . I'll put the answer in the comments.