title: CryptoJS AES encryption with ECB mode produces different results with the same params
body: <p>As mentioned in this <a href="https://stackoverflow.com/a/47096284/940030">answer</a>, I can use ECB mode to reverse a transformed value back into plaintext and not just compare it to another hashed value.</p>
  
  <p>However, with the below code snippet:</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="true">
  <div class="snippet-code">
  <pre class="snippet-code-js lang-js prettyprint-override"><code>const x = CryptoJS.AES.encrypt('abc', '123', { mode: CryptoJS.mode.ECB }).toString()
  const y = CryptoJS.AES.encrypt('abc', '123', { mode: CryptoJS.mode.ECB }).toString()
  
  console.log(x, y, x === y)</code></pre>
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;script src="https://cdnjs.cloudflare.com/ajax/libs/crypto-js/4.0.0/crypto-js.min.js"&gt;&lt;/script&gt;</code></pre>
  </div>
  </div>
  </p>
  
  <p>I get:</p>
  
  <pre><code>U2FsdGVkX19blKXDRXfdgXyviCrZtouB0cPcJPoR/cQ= U2FsdGVkX1+1AwWqKWntLVkh7DtiZxPDYCDNsjmc8LM= false
  </code></pre>
  
  <p>Am I doing something wrong? Is there a way to achieve the intended results?</p>