Note that in the setup file, I have commented out every option other
than +STARTUP and +TAGS.  In this case, the in-buffer tag selection
results in a tag selection display of:

------------------------------------------------------------
Inherited:
Current:    @work call

  [l] call    [e] email
{ [w] @work   [h] @home   }
{ [w] @work   [h] @home   }   <----- Note the duplicated listing
------------------------------------------------------------

If you comment the +STARTUP option in the setup.org file, then the tag
selection behaves as expected.  Alternatively, if you enable any of
the other options, then the issue reoccurs.

Thanks!
--
Anupam