Reproduction steps:
1. Open the attached “Test Project” project
2. Open the “Scenes/SampleScene” Scene
3. Enter the Play Mode

Expected result: The Editor runs the “Script.cs” Script without any issues
Actual result: The Editor crashes

Reproducible with: 2021.2.0a21, 2021.2.19f1, 2021.3.21f1, 2022.2.12f1, 2023.1.0b9, 2023.2.0a8
Not reproducible with: 2020.3.46f1, 2021.2.0a20

Reproducible on: Windows 10

First lines of the stack trace:
0x00007ff6b6d0a592 (Unity) PhysicMaterial::GetInstantiatedMaterial
0x00007ff6b6cdb599 (Unity) Collider::GetClonedMaterial
0x00007ff6b626bf58 (Unity) Collider_Get_Custom_PropMaterial
0x0000014adcc734b1 (Mono JIT Code) (wrapper managed-to-native) UnityEngine.Collider:get_material (UnityEngine.Collider)
0x0000014adcc72e23 (Mono JIT Code) [Script.cs:10] Script:Start ()

Note:
- For “Not reproducible with” versions, the Console printed an error instead of crashing: “PxPhysics::createMaterial: limit of 64K materials reached.”