If a user has access to multiple sites, opening more than one site on the same browser (each in a different tab) may mess up the contents.
1. A user has access to both sites A and B.
2. The user opens a tab for site A to explore the contents of site A.
3. The user then opens a new tab for site B in the same web browser to explore the contents of site B.
4. The user returns to the original tab of site A, and this time, when trying to explore the contents, the tab of site A may display the contents of site B.