Data export schema objects not visible (no replies)

Hi

I am trying to make a backup of my database.
I am using Server>Data Export. Export to dump folder.

The schema is displayed in the left side window, which I can then select.
However the window on the right does not show the schema objects (tables).
When I ignore and export all the tables are exported into the folder.
When I try to Data import the same problem arises - which is making it difficult to choose a specific table to import.

What am I missing ?

Regards