Solr filters stopped working, e.g. hidden by the filter folders are visible to all users, and restarting the Solr DB does not fix the issue.
The issue with the filter might be caused by making the parent folder the top-level volume. We suggest rebuilding (deleting and recreating) the Solr DB to fix the filtering problem.
<supportagent>For tips on troubleshooting Solr, refer to this article.</supportagent>
After you rebuild the Solr DB, make sure the filters are working as expected.