CryptoJS in Adobe Extendscript (ES3): Decrypting String Does Not Work - json

Question

I'm working on a Photoshop CES extension and attempting to encrypt data using CryptoJS. This all works, except when I convert the encrypted data to a string and then try to decrypt it.
Here's a link to a JS Fiddle that works:
https://jsfiddle.net/davevsdave/atwpbmr5/3/
This same code in ExtendScript Toolkit or running in Photoshop does not return the correct finalResult var. Here's the code I'm running in extendscript, identical to what is in the above JSFiddle (except $.println instead of console.log and an extra line showing that decrypting the obj works):
//JSON from Panel
jsonStr = '{"date":"1563662582633","email":"email#email.com","password":"1234324","uniqueID1":"12345","uniqueID2":"asfdsa-asdfsa-adsfas-sadfsdf-asfsaf\n"}';
//JSON from Panel
jsonStr = '{"date":"1563662582633","email":"email#email.com","password":"1234324","uniqueID1":"12345","uniqueID2":"asfdsa-asdfsa-adsfas-sadfsdf-asfsaf\n"}';
//Encrypt Data
var encrypted = CryptoJS.AES.encrypt(jsonStr, 'secret_passcode');
//Convert OBJ to String so I can save it
var encryptedString = encrypted.toString();
$.writeln('encryptedString is ' + encryptedString);
//Decrypt string - DOES NOT WORK IN EXTENDSCRIPT
var decryptedValue1= CryptoJS.AES.decrypt(encryptedString, 'secret_passcode');
$.writeln('decryptedValue1 is ' + decryptedValue1);
//Decrypt OBJ - WORKS IN EXTENDSCRIPT
var decryptedValue2= CryptoJS.AES.decrypt(encrypted, 'secret_passcode');
$.writeln('decryptedValue2 is ' + decryptedValue2);
//Final Decrypt output from string
$.writeln('finalOutput from decryptedValue1 is ' + decryptedValue1.toString(CryptoJS.enc.Utf8));
//Final Decrypt output from obj
$.writeln('finalOutput from decryptedValue2 is ' + decryptedValue2.toString(CryptoJS.enc.Utf8));
I'm guessing the issue is Extendscript using ES3. Any suggestions on how I can convert the encrypted data to a string (so I can store it as JSON) and then still be able to decrypt it? Obviously being able to store data I can't decrypt does me no good.
Thanks!