FM16 should not open the databases when they are 'open hidden' in the script.
At the moment, it does open all databases on the taskbar. This is a show stopper for us to upgrade to this version as it breaks all our security because users can now open databases from the taskbar.
It is extremely complex and difficult and time consuming to rewrite our application in one database.
Why don't you keep the same behaviour as in FM15 and all prior version to that.