IssueTracker

See attached screenshot.
Utilities.parseCsv no longer works as stated in the documentation, but throws an error (Cannot convert to char).
It works correctly on previous runtime, but when I turn on V8 it's broken. I just confirmed this.

function testCSV() {
  //EXAMPLE FROM THE DOCS at https://developers.google.com/apps-script/reference/utilities/utilities#parsecsvcsv,-delimiter
  var csvString = "a\tb\tc\nd\te\tf";
  var data = Utilities.parseCsv(csvString, '\t');
  Logger.log(data);
 
  //my easy to read example, also doesn't work
  csvString= "Hello;world";
  data = Utilities.parseCsv(csvString, ';');
  Logger.log(data);

}

What steps will reproduce the problem?
1. run the above code with runtime V8 disabled and it will work, enable it and it will break