I can re-create the issue using Autodesk content.

To be more specific I am using the "Cut-In" option for the fitting and then using the "Fixer" command line option.  In the Fix and Rotate dialog I am checking the "Fall in degrees" box and then inputting -45 to roll the fitting.  Once fitting is placed in the drawing  the couplings come in with the halo.

I have narrowed it down to couplings rotated at 45 degrees.  Couplings rotated at any other angle do not produce the halo.