User with "knowledge_manager" role cannot see the knowledge list-view (kb_knowledge.list)Issue The user reporting the issue was an "admin" user, and they reported that they provided several other users with the "knowledge_manager" role. Those users to whom the role was given were unable to view the kb_knowledge list-view. The admin user wanted to know why this was. Note: when the users who were given the "knowledge_manager" role opened the kb_knowledge list-view, they saw the below message: Number of rows removed from this list by Security constraints: 20 CauseThere was no "read" operation ACL for the table-level of kb_knowledge.ResolutionThe admin user had a field-level ACL for kb_knowledge (e.g. "kb_knowledge.*") with operation = read, but they did not have a table-level ACL (e.g. "kb_knowledge.NONE") for operation = read. Once the user created the kb_knowledge.NONE table-level ACL for operation = read, and cleared the cache (in the left-navigator, type "cache.do" and hit Enter, as ACL results always cache), the issue was resolved. All users with the "knowledge_manager" role were now able to see the kb_knowledge list-view with no security restraints.