If you see all the extension when you try to login in the slave site, this is the symptom that you are NOT logged in the slave site but in your master.

When JMS is not installed or that the patches are not installed or that the slave site definition is not saved with success, by default, this is the master website that is displayed.
A tip is to set different site name for each website and verify when you login in the back-end that you have the correct site name. You can also verify the "global configuration" to verify that you are connected on the appropriate DB and table prefix.