[PyMOL] Pymol loading pdb files twice

Using Pymol 3.1.3 (for mac from SBgrid) I notice that when I open pymol by double clicking a pdb file in finder or starting up from the command line with a pdb file, it appends a second state:

% pymol ~/Downloads/4kc3.pdb
PyMOL(TM) 3.1.3 - Incentive Product
Copyright (C) Schrodinger, LLC

This Executable Build integrates and extends Open-Source PyMOL.
License Expiry date: 2025-06-30

 Detected OpenGL version 2.1. Shaders available.
 Tessellation shaders not available
 Detected GLSL version 1.20.
 OpenGL graphics engine:
  GL_VENDOR:   Apple
  GL_RENDERER: Apple M1
  GL_VERSION:  2.1 Metal - 88.1
HEADER    IMMUNE SYSTEM                           24-APR-13   4KC3
TITLE     CYTOKINE/RECEPTOR BINARY COMPLEX
COMPND    MOL_ID: 1;
COMPND   2 MOLECULE: INTERLEUKIN-33;
COMPND   3 CHAIN: A;
COMPND   4 FRAGMENT: UNP RESIDUES 112-270;
COMPND   5 SYNONYM: IL-33, INTERLEUKIN-1 FAMILY MEMBER 11, IL-1F11, NUCLEAR`
COMPND   6 FACTOR FROM HIGH ENDOTHELIAL VENULES, NF-HEV;
COMPND   7 ENGINEERED: YES;
COMPND   8 MOL_ID: 2;
COMPND   9 MOLECULE: INTERLEUKIN-1 RECEPTOR-LIKE 1;
COMPND  10 CHAIN: B;
COMPND  11 FRAGMENT: UNP RESIDUES 19-321;
COMPND  12 SYNONYM: PROTEIN ST2;
COMPND  13 ENGINEERED: YES
 ObjectMolecule: Read secondary structure assignments.
 ObjectMolecule: Read crystal symmetry information.
 CmdLoad: "" loaded as "4kc3".
 Detected 8 CPU cores.  Enabled multithreaded rendering.
HEADER    IMMUNE SYSTEM                           24-APR-13   4KC3
TITLE     CYTOKINE/RECEPTOR BINARY COMPLEX
COMPND    MOL_ID: 1;
COMPND   2 MOLECULE: INTERLEUKIN-33;
COMPND   3 CHAIN: A;
COMPND   4 FRAGMENT: UNP RESIDUES 112-270;
COMPND   5 SYNONYM: IL-33, INTERLEUKIN-1 FAMILY MEMBER 11, IL-1F11, NUCLEAR
COMPND   6 FACTOR FROM HIGH ENDOTHELIAL VENULES, NF-HEV;
COMPND   7 ENGINEERED: YES;
COMPND   8 MOL_ID: 2;
COMPND   9 MOLECULE: INTERLEUKIN-1 RECEPTOR-LIKE 1;
COMPND  10 CHAIN: B;
COMPND  11 FRAGMENT: UNP RESIDUES 19-321;
COMPND  12 SYNONYM: PROTEIN ST2;
COMPND  13 ENGINEERED: YES
 ObjectMolecule: Read secondary structure assignments.
 ObjectMolecule: Read crystal symmetry information.
 CmdLoad: "" appended into object "4kc3", state 2.

While if I load a pdb file into an already running instance of pymol, by drag and drop or File > Open, it behaves as I expect, just loading the file once. I do not see this behavior in version 3.0.0.

--
Kevin Jude, PhD
Structural Biology Research Specialist, Garcia Lab
Howard Hughes Medical Institute
Stanford University School of Medicine
Beckman B177, 279 Campus Drive, Stanford CA 94305