*Steps to reproduce:*
# Open attached repro project. Or:
** Create a new High Definition 3D project.
** Go to Package Manager > High Definition RP > Samples and import "Materials Sample".
# Open "Hair" scene.
# Open "PhysicalHair_Cards" shadergraph.
# Enter Playmode.

*Actual results:* No errors occur.

*Expected results:* "Objects are trying to be loaded during a domain backup." errors appear in console. Full message in notes below.

*Reproducible with versions:* 6000.0.0f1, 2023.3.0b6, 2022.3.26f1

*Can't test with versions:* 2021.3.37f1, Materials sample did not include this shadergraph and I couldn't downgrade or repro successfully.

*Tested on (OS):* Ubuntu 20.04, MacOS 12.7

*Notes:*
* Attached .mp4 of this occuring.
* Error message:

 
{code:java}
Objects are trying to be loaded during a domain backup. This is not allowed as it will lead to undefined behaviour!
UnityEditor.Graphing.GraphObject:OnBeforeSerialize ()
{code}