How to reproduce:
1. Open the attached project "LoL_Math_Game.zip"
2. Open Assets\FactoryGame\Scenes\GameScene.unity
3. Select "RobotPrefab" in the Hierarchy window
4. Add "IK Manager 2D" Component to "RobotPrefab"
Expected results: No errors thrown
Actual results: "NullReferenceException" is thrown in the Console window
Reproducible with: 5.2.7 (2020.3.48f1), 7.0.10 (2021.3.25f1), 8.0.5 (2022.2.0a12)
Not reproducible with: 9.0.0-pre.1 (2023.1.0a2), 10.0.1 (2023.1.0b16, 2023.2.0a15)
Reproducible on: Windows 10