No longer able to see the table list in the query designer when working in BIDS after the update to 2015.2.2.
As per our policy we are not showing the table list in the explorer, we have restricted that table list view in the DB security policy. If you still wish to view their DB table list then please use the below SQL query, It will show the list of tables present in their DB.
SELECT * FROM SYS.TABLES ORDER BY NAME
WHERE TABLE_TYPE = 'BASE TABLE' ORDER BY TABLE_NAME