• I've read and understood the contribution guidelines.
• I've searched for any related issues and avoided creating a duplicate issue.

Please give us a description of what happened.

With Gutenberg 4.1 RC2 the Yoast plugin interferes with displaying reusable blocks on front end.

Tested by plugin elimination.
No display of browser console errors

Please describe what you expected to happen and why.

That reusable block appears on front end.

How can we reproduce this behavior?

1. Yoast SEO is activated.
2. Add a new post
3. Create a block (any block will do, tested with cover and horizontal line)
4. Save & Preview
5. Make it reusable
6. Save & Preview

Technical info

• WordPress version: 4.9.8
• Yoast SEO version: 4.1 RC2

• If relevant, which editor is affected (or editors):

• Classic Editor
• Gutenberg
• Classic Editor plugin

• Which browser is affected (or browsers):

• IE11
• Edge
• Chrome
• Firefox
• Safari

• Relevant plugins in case of a bug:

• Tested with theme: Thirty-Seventeen
  This was originally reported as bug on the Gutenberg repository 10942