Comment 1 for bug 407206

The clickable schema object is given the ID dbname.schemaname. The first time it is clicked an ajax call is made to get the list of tables and add them as children to the schema on the tree. A flag is set so that this action is not repeated on subsequent clicks. If the tab is closed it still remembers this flag. If the user clicks on to another tab and then back the contents are reset and the flag is remembered. In both of these cases it will not try again upon further clicks to draw the tables again.
I think the best way to fix this is to prepand a unique hash to the ID that will be unique. To fix the problem of clicking out of the tab and then back in https://bugs.launchpad.net/gwdb/+bug/407204 needs to be resolved.