I tested this with a newly created native/HSQLDB-database and with a preexisting MySQL-Database. I 
am on Leopard 10.54, IntelMac.

Do this:

- open a database -> all wizards are dimmed out. You can see tables but you can only open them and 
manipulate data. You cannot create anything (table, query, form, etc...). All relevant options are gone 
from context-menu when right-clicking a table or query.

Also try this:

- create a new database. During the creation process all functionality is available.
- save the database
- reopen it. Find the situation described above.

Best
Panca