Introduced in #11063
Previously: #11815 (comment)

Steps to reproduce:

1. Navigate to Posts > Add New
2. Add a paragraph with at least a few words
3. Apply a link to some but not all of the text, enabling the open in New Tab option
4. Verify generated HTML in Code Editor

Expected:

<!-- wp:paragraph -->
<p>this is a <a href="http://example.com" target="_blank" rel="noreferrer noopener" aria-label="test (opens in a new tab)">test</a></p>
<!-- /wp:paragraph -->

Actual:

<!-- wp:paragraph -->
<p>this is a <a href="http://example.com" target="_blank" rel="noreferrer noopener" aria-label=" (opens in a new tab)">test</a></p>
<!-- /wp:paragraph -->

(the text of the link, with "(opens in new tab)" appended as a suffix)

Observations:

• At Caret (arrow) followed by a text link breaks content #11815 (comment), the aria-label appeared to be assigned to the text of the parent paragraph
• In my Steps to Reproduce here, the text generated appears to be empty

Relevant code:

cc @ryanwelcher @mcsf