The first user is logged in to the FMS and all seems to be good. After a second user logs into the web console, the first user is not able to select anything on the FMS and it freezes. If a third user logs into console the second user is unable to click on objects, and so on.
Below errors could be seen in the FMS logs.
17-09-26 13:59:22.175 ERROR [http-exec-14] org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/console].[Portal Servlet] - Servlet.service() for servlet [Portal Servlet] in context with path [/console] threw exception
java.lang.SecurityException: No active user
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