Not sure what would be an example. Code Assistant drop down list of objects does not include tables not belonging to the current user, only packages (did not check for other pl/sql objects) and views.
Found one more problem.
table gl.gl_je_lines, public synonym gl_je_lines, user is not gl.
select * from gl_je_lines l where l.
after typing the point, code assistant does not provide column names anymore. It still works for
select * from gl.gl_je_lines l where l.