*Steps to reproduce:*
# Create a new Universal 3D project.
# Open Window > Package Manager > Universal RP.
# Click "Samples" tab and click "Import" next to URP Package Samples.
# You may have to change the Render Pipeline Asset according to the instructions in Game View.
# Enter play in the following sample scenes:
** CameraStacking > MixedFOV
** Shaders > Lit

*Actual results:* Missing script warnings when play mode is entered.

*Expected results:* No warnings.

*Reproducible with versions:* 6000.0.1f1, 2023.3.0a2

*Not reproducible with versions:* 2023.2.20f1, 2022.3.28f1, 2021.3.38f1

*Can't test with versions:* 2023.3.0a1, unable to install

*Tested on (OS):* macOS (Intel) 12.7.4

*Notes:*
* See also linked UUM-71852 for missing scripts in the package samples that occur in Unity 6 but also 2022.3.