Restricted Confluence pages are being suggested to customers at Customer Portal when jira-servicedesk-users group is used to restrict page access in Confluence

Steps to Reproduce

1. Create a Space in Confluence.
2. Add multiple pages to this Space.
3. Choose a single page and restrict access to jira-servicedesk-users in the padlock icon.
4. Create a JIRA Service Desk project
5. Access Project settings > Knowledgebase
6. Link to the Confluence space created
7. Access Portal as user not listed at jira-servicedesk-users group (customer)
8. Perform a search for the restricted page

Actual Results

Customers are suggested with the restricted pages even if they are not part of jira-servicedesk-users group

Expected Results

The page should not be displayed to users without the permission to view the Confluence page.

Workaround

Use a specific Confluence space for the knowledge base that only contains pages you wish to share with Service Desk users. Or use another group, except jira-servicedesk-users, to restrict page access in Confluence.