title: firebase dynamic link preview link not working with facebook messenger
body: <p>Created firebase dynamic short link will not preview correctly in facebook messenger.
  It puts up the message and link as expected and shows a preview image with url.</p>
  
  <p>The url included in the message is working but not the url if I click on the preview.</p>
  
  <p>The url should be : <a href="https://q3zbm.app.goo.gl/8f7b" rel="nofollow noreferrer">https://q3zbm.app.goo.gl/8f7b</a>
  but the preview link becomes  <a href="https://q3zbm.app.goo.gl/s?socialDescription=Welcome&amp;socialImageUrl=http://andreasandersson.nu/images/awesome-photo.jpg&amp;socialTitle=Gooo" rel="nofollow noreferrer">https://q3zbm.app.goo.gl/s?socialDescription=Welcome&amp;socialImageUrl=http://andreasandersson.nu/images/awesome-photo.jpg&amp;socialTitle=Gooo</a></p>
  
  <p>I was able to reproduce this in a very small program</p>
  
  <pre><code>private void generate() {
      DynamicLink.SocialMetaTagParameters.Builder params = new DynamicLink.SocialMetaTagParameters.Builder();
      params.setImageUrl(Uri.parse("http://andreasandersson.nu/images/awesome-photo.jpg"));
      params.setDescription("Welcome");
      params.setTitle("Gooo");
  
      FirebaseDynamicLinks.getInstance()
          .createDynamicLink()
          .setLink(Uri.parse("http://andreasandersson.nu"))
          .setDynamicLinkDomain("q3zbm.app.goo.gl")
          .setIosParameters(new DynamicLink.IosParameters.Builder("ios.app.example").build())
          .setAndroidParameters(new DynamicLink.AndroidParameters.Builder().build())
          //.setSocialMetaTagParameters(params.build())
          .buildShortDynamicLink(SHORT)
          .addOnCompleteListener(new OnCompleteListener&lt;ShortDynamicLink&gt;() {
              @Override
              public void onComplete(@NonNull Task&lt;ShortDynamicLink&gt; task) {
                  if (task.isSuccessful()) {
                      Uri shortLink = task.getResult().getShortLink();
                      Uri flowchartLink = task.getResult().getPreviewLink();
                      Intent shareIntent = new Intent();
                      shareIntent.setAction(Intent.ACTION_SEND);
                      shareIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                      shareIntent.putExtra(Intent.EXTRA_TEXT, "check this:" + shortLink.toString());
                      shareIntent.setType("text/plain");
                      startActivity(Intent.createChooser(shareIntent, "share"));
                  }
              }
          });
  }
  </code></pre>
  
  <p>I know that the app values are not correct but inputting correct ones gives no difference in the result.</p>
  
  <p>Is this an error on the firebase dynamic link or is the problem with facebook messenger?
  When doing the exact same thing from ios it is working as intended which should mean that this is a android related issue with the sharer?</p>
  
  <p><strong>Update</strong>: Thanks for contacting FIrebase support. This is an issue with Facebook that we already raised to them. As of now, we are yet to hear any updates from them, but once we do, we'll let you know.</p>