Browsing sessions are switching between data center nodes in load balanced environment
Platform Notice: Data Center Only - This article only applies to Atlassian products on the data center platform.
When browsing a site hosted on a Data Center platform, the client is switching sessions from one node to the other in between each page load.
Confluence Data Center
Session Affinity, or "Sticky Sessions", is not enabled on the load balancer.
The steps for implementing this feature differs from load balancer vendor to vendor, look for "Session Affinity" or "Sticky Sessions" and ensure this is enabled.