Reproduction steps:
1. Open the attached “ASDQWE” project
2. Open the “Assets/Scenes/Levels/Chapter1/C1L4/C1L4.unity” Scene
3. Observe the Console Window

Expected result: No errors are thrown
Actual result: “IndexOutOfRangeException: Index was outside the bounds of the array” is thrown

Reproducible with 2.2.0 (2021.3.24f1, 2022.2.17f1, 2023.1.0b14, 2023.2.0a12)
Not reproducible with: 2.1.0 (2022.2.17f1)
Could not test with: 2.2.0 (2020.3.47f1 (Multiple errors in Outline.cs and AssemblyImportSettingsAutomation.cs))

Reproducible on: Intel MacOS 13.3.1

Note: The issue can also be seen when selecting the GameObject that has Extruded Splines or when editing the Splines