- Install a 9.0 site.
- Register it with a 9.1 Solr setup.
- Go to a page that hosts a site search templated control.
- Click advanced search.
- In the exact phrase box, enter 'sample block'.
- Click search.
- The results return 'sample content block'.
Instead of doing an exact phrase search, the search is looking for each word individually (that is, performing an AND search of each word).
This happens because the default operator between individual term queries was changed to AND in 9.1.
To fix the problem, upgrade the Ektron site to version 9.1.