Reproduction steps:

1. Create a new 3D URP project
2. In the Assets Window, create a new Material
3. In the Hierarchy Window, create an Empty GameObject
4. In the Inspector Window, attach the “SpriteRenderer” Component to the previously created GameObject
5. In the Inspector Window, for the “SpriteRenderer” Component set any Sprite, and set the Material previously created
6. Observe the result

Expected result: The warning appears only once, when the material is applied on a “SpriteRenderer” Component
Actual result: The warning constantly appears in the console after applying the material, entering Play Mode, exiting Play Mode, baking, saving the scene

Reproducible in: 6000.0.19f1, 6000.0.27f1, 6000.1.0a4
Not reproducible in: 2021.3.46f1, 2022.3.52f1, 6000.0.18f1

Reproducible on: macOS 14.6.1 (M1 Pro), Windows 10 (user)
Not reproducible on: No other environments tested

Notes:

• Having GameObjects with different Lit Materials applied multiplies the amount of warnings in the Console
• Reproducible in 3D projects only