Latest Posts has stopped working on v3.6.0

[ghost]

Describe the bug
Quite simply the Latest Posts does not show on the frontend/website. This appears to have presented itself immediately as upgraded to Gutenberg v 3.6.0

See https://bloom.im/blog/

To Reproduce
Steps to reproduce the behavior:

1. Add new/Edit post
2. Click Plus + sign to add new block
3. Add Block +
4. Scroll down to Widgets section, select Latest Posts
5. Save & view the web page, nothing appears

Expected behavior
I expected the latest posts to show as they do in the Wordpress Gutenberg editor.

Screenshots
Latest posts working on backend:

Desktop (please complete the following information):

• OS: High Sierra 10.13.6 (17G65)
• Browser: Safari
• Version: Version 11.1.2 (13605.3.8)

[mtias]

I cannot reproduce this. Are you using any specific settings on the block? Could you switch to the full text editor and show what the HTML comment source is?

[ghost]

I cannot reproduce this. Are you using any specific settings on the block? Could you switch to the full text editor and show what the HTML comment source is?

I had # of items set to 100 (max), but have since tried re-adding the block and even with defaults it does not work either. Just updated to 3.6.1 and the issue is ongoing.

The 'Code Editor' for gutenberg on the page looks like this:

<!-- wp:heading -->
<h2>👋 <a href="#mailmunch-pop-671770">Get these articles to your inbox</a></h2>
<!-- /wp:heading -->

<!-- wp:paragraph -->
<p></p>
<!-- /wp:paragraph -->```

[youknowriad]

Some people raised that Yoast might cause the dynamic blocks to not work properly. Are you using Yoast? Can you try disabling it?

[ghost]

Some people raised that Yoast might cause the dynamic blocks to not work properly. Are you using Yoast? Can you try disabling it?

That fixed it. Thanks. Yoast problem, or gutenberg problem, or both?

[youknowriad]

We don't know yet :) @xyfi @omarreiss @atimmer

[youknowriad]

It looks like when the server side registration (do_blocks, the the_content filter) is called, the content is already free from dynamic blocks, I suspect Yoast to have their own pre filter that removes those for some reason?

[youknowriad]

Correction:

I think it's probably a Gutenberg issue, there's a filter now that strip dynamic blocks from get_the_excerpt calls but apparently when you have yoast, this filter also messes up with the_content.

Related #8984