We detected that on all Divi-themed websites it's initially impossible to see Smart Excerpt at the search results page. Instead we see cutter content for pages/posts and nothing for PDF file content. Look like an image below:
The reason is in the search.php file of the Divi theme.
As you can see in line 54, the Divi theme (and almost all themes based on it) is using custom
truncate_post( 270 ); call to "create" an excerpt. Which is completely wrong from my point of view.
What you can do to fix this problem is to comment out this line and put correct code
the_excerpt(); instead. Like this:
That will fix the problem!