.val(x) where x contains a comma (e.g. 'Stefani, Firo') is split in two, even if values-separator=';'

[FiroStefani]

$('#author').val('Stefani, Firo') is silently ignored due to the comma, even when values-separator=';' and selection-required="false"

I think at least part of the problem may be on line 555: values = values.split(','); This seems to work: values = values.split(_this.options.get('valuesSeparator'));