How to reproduce:
1. Open the attached project "ModelImportTest.zip"
2. Open Assets/Sketchup folder in the Project window
3. There are four .skp files named after the versions of Sketchup they were saved as
Expected result: the .skp files of versions 2020 and 2021 are imported correctly and are usable
Actual result: the .skp files of versions 2020 and 2021 are not imported correctly and are unusable
Reproducible with: 2019.4.32f1, 2020.3.22f1, 2021.1.28f1, 2021.2.1f1, 2022.1.0a13
Notes:
- Pressing the "Select Nodes..." button in the Inspector window after selecting the 2020 or 2021 version .skp asset throws "IndexOutOfRangeException: Index was outside the bounds of the array" error
- .skp files of versions 2018 and 2019 don't encounter this issue