parseDate() doesn't accept its own formatDate() output in all the formats of "ar" locale/culture

Generally Globalize library's parseDate() should always accept the output of its own formatDate(). But this fails for globalize.culture.ar.js.

Globalize.formatDate(new Date(), { 'raw': 'yyyy-MM-dd HH:mm:ss' }) return "٢٠١٨-١١-٠١ ١٣،٢٧،١٧"

Even if we pass the return value from above to parseDate it cant be accepted and retruns 'null'-

Globalize.parseDate("٢٠١٨-١١-٠١ ١٣،٢٧،١٧", { 'raw': 'yyyy-MM-dd HH:mm:ss' }) return nulll