6324321 

Descriptive error message is not displayed when an error occurs remotely.

When an exception occurs remotely, error messages are logged in the error log of the remote instance. However, the local instance currently displays a generic remote exception which does not clearly indicate which error log that the user must view. 

6396820 

Session replication does not failover correctly when cookies are disabled on the client.

6406176 

When enabled, session replication should be the default session manager.

After enabling session replication by using the Admin Console or the CLI, or by editing the server.xml file, session replication is not really enabled. Instead, sun-web.xml needs to be manually edited.