Step one: create a LEADER with text and change the arrow to DOT. Make sure the leader and text are not on layer 0.
Step two: export the drawing using the DWG To PDF.pc3 driver and make sure that Export Layer information is enabled.
Or: open the attached sample PDF.
If you open the new PDF and turn off the layer the text is on, the leader with the DOT arrow does not disappear, only the text does. It seems the leader has been put on layer 0. Is the customized leader being blocked on export?
The only workaround we've found is to explode all leaders...hardly a valid workflow.