Mark This Result in Text Not Highlighting Other Fields

Under the “Readability” tab, when selecting the “Mark This Result in Text”, the only text that gets marked is the original WYSIWYG field.

To repeat this problem, make an additional WYSIWYG field using ACF plugin. Type some text in the new field. Type the same text in the original WYSIWYG field Click the “Mark This Result in Text”. You’ll notice it does not highlight the target text in the second field.