title: "Cannot perform this action on a not sealed instance" java.lang.IllegalStateException exception
body: <p>With android <code>AccessibilityService</code> able to paste in other app <code>EditText</code> Field, but with browser <code>testfields</code> (Emulator Default Browser or Samsung deault Browser) its not working, throwing error: </p>
  
  <blockquote>
    <p>Cannot perform this action on a not sealed instance.</p>
  </blockquote>
  
  <p>In android chrome browser with some singnup textfield its working but not for all textfields. </p>
  
  <pre><code> @Override
  public void onAccessibilityEvent(AccessibilityEvent event) {
  
      AccessibilityNodeInfo source = event.getSource();
      if (source != null &amp;&amp; ( event.getEventType() == AccessibilityEvent.TYPE_VIEW_FOCUSED ) ) {
              // || event.getEventType() == AccessibilityEvent.TYPE_VIEW_CLICKED ) &amp;&amp;
              //event.getClassName().equals("android.widget.EditText")
              //) {
          ctx = getApplicationContext();
          ClipboardManager clipboard = (ClipboardManager) ctx.getSystemService(Context.CLIPBOARD_SERVICE);
          ClipData clip = ClipData.newPlainText("label", "XYZ");
          clipboard.setPrimaryClip(clip);
          source.performAction(AccessibilityNodeInfo.ACTION_PASTE); 
          //Not Working, always return false.
  
          //Tried with other options
          Bundle argumentsTest = new Bundle();
          argumentsTest.putCharSequence(AccessibilityNodeInfo.ACTION_ARGUMENT_SET_TEXT_CHARSEQUENCE, "Bundle Test Data");
          source.performAction(AccessibilityNodeInfo.ACTION_SET_TEXT,argumentsTest )
          // Not Working, throw java.lang.IllegalStateException exception
          //Message: "Cannot perform this action on a not sealed instance"
      }
  }   
  </code></pre>