My IT group has created a materialized view (mstudenthierarchyprod). When I go to the materialized view branch in the tree and press the + in front of the materialized view, I get nothing. I have read that in different releases this was not the case. I am just trying to find the reason and resolve it so I can see the materialized view. I am running Version 21.4.1.349 Build 349.1822 of Oracle SQL Developer. Any assistance would be greatly appreciated. My IT department says it is a bug and they cannot help.