I'm using MathJax to render some math. How do I get rid of this message in the bottom left? I can't find this in MathJax's docs.
It's a status bar. Per MathJax-Docs, you can turn it off by setting the message style to none before you load mathjax:
<script type="text/x-mathjax-config">
MathJax.Hub.Config({
messageStyle: "none"
});
</script>