[Resolved] Yoast breadcrumb label always shows in default language

<b>Background of the issue: </b>
Show a breadcrumb label in a translated langauge.

All strings with the term are translated. The string is "Keynote Speaker."

It is the title for a custom post type. The post type is called "Speakers."

Under Yoast > Settings > Speakers I have entered "Keynote Speakers" as the breadcrumb title. However, even when I remove this alternate breadcrumb title, the issue persists. The term "Speakers" is also translated in String Translation.

I have tried:

Clicking on "Look for strings while pages are rendered", refreshing the page in a new tab, coming back to the String Translation page and refreshing again to see if the string appears. It does not.

Scanning the parent theme, child theme and Yoast SEO plugin files for strings where it may be

Adding translations to as many instances of the term as possible

Deleting the strings with the terms "Keynote Speakers" and re-adding them with translations.

Checking if we have enough memory (we do)

Nothing seems to work.

<b>Symptoms: </b>
The breadcrumb title always shows in the default language instead of the translated language, even though all strings with the term are translated. The term 'Speakers' is also translated in String Translation.

<b>Questions: </b>
Why does the breadcrumb title not appear in the translated language?
What steps can I take to ensure the breadcrumb title is translated correctly?