Yup, still happens. The easiest way to reproduce it to change a title of one of the charts to `title=""` (make sure to type it, not copy-paste). I'm using Safari for macOS if this makes a difference.

  Unexpected Application Error!
  Unexpected EOF
    eval@[native code]
    parseChartCommand@https://tenno.app/assets/index-y2OkIpP6.js:114:333

Ah, yes, I just fixed that. While you edit, if the code is not valid now it will prevent from crashing the whole thing (band-aid fix).