Editor crashes when calling SpriteAtlasUtility.PackAtlases

Unity: 2D

Backport

Sprite Atlas V1

2021.3.X

2020.3.X

How to reproduce:
1. Open the attached project
2. In the top toolbar, select Test -> Pack Atlases

Expected result: Atlases are packed
Actual result: Editor crashes

Reproducible with: 2019.4.29f1, 2020.3.15f1, 2021.1.16f1, 2021.2.0b6, 2022.1.0a4