I'm just getting a blank page on Firefox and a few of these errors in the inspector output: Uncaught SecurityError: Security error when calling GetDirectory

I'm just getting a blank page on Firefox and a few of these errors in the inspector output: Uncaught SecurityError: Security error when calling GetDirectory It does work on Chromium. And it looks nice. I wish it had keyboard navigation though, which it doesn't seem to have yet, so I can quickly correct a previous entry.