Confluence Super User Cannot Find Restricted Page via Quick Search

Issue summary

Confluence super user or "confluence-administrators" group cannot find restricted page via quick search but are able to access the page anyways with direct links.
Quick search query will not return any restricted page unless the restricted page has been accessed by the super user at least once.

• On newer version of Confluence (tested on Confluence 6.6 and Confluence 7.3.1), the page remains unsearchable even viewing the restricted page.

Steps to Reproduce

1. Create a standard user under the group confluence-users (let's say User A).
2. Login as User A.
3. Create a public space or personal space.
4. Restrict view space permission to User A only.
5. Create a page and restrict view permission to User A only (optional).
6. Login as super user or user from the confluence-administrators group.
7. Search User A's content in Quick Search.
8. Observe the results.

Expected Behaviour

Quick search should return restricted page due to the access rights as described here.

Actual Behaviour

Quick search will only return restricted page when it has been accessed before.

• Before restricted page is accessed

• After restricted page is accessed