Steps to reproduce the issue

1. Create Custom Field of type "text" or "editor" or "textarea"
2. Create a new article called "My test article" and enter some keywords for searching into the custom field (e.g. "My favourite fish is a pike")
3. Go to component > index and index all your content
4. Go to frontend and use Joomla!-search: enter "pike" or "fish"

Expected result

The article "My test article" should be found by Joomla!-search

Actual result

"No Results Found"

System information (as much as possible)

Joomla! 4.0.5
PHP 8.0.14

Additional comments