SysML BDD diagrams - 'owned behaviors' compartment not displayed

[avi10000]

Hi,
In all blocks in all SysML BDD diagrams:

I have lost the Behavior compartment (for Seq diags, Act diagrams), so I cannot see the block's behaviors listed. (Btw, they never hyperlinked by default.)

And they are no longer listed in the Compartment Visibility dlg box to be able to show them.

I must have done a global hide that affected global Behavior compartments, but I did not notice at the time.

How do I get back the Behavior compartment? 

Tnx
Avi

edits:
 - made subject line more accurate