Assertion failed on expression: 'IsNormalized' on GUIUtility:ProcessEvent when the Directional Light is positioned particularly

Unity: Shadows/Lights

2022.2.X

2022.1.X

2021.2.X

2020.3.X

2021.1.X

Closing since this version is not supported anymore, and there is another port to track 2021.3 which is the supported version

Reproduction steps:
1. Open the attached 'IsNormalized' project
2. Open the 'IsNormalizedBug' Scene
3. Select any GameObject in the Hierarchy

Expected result: No errors are in the Console
Actual result: Two 'Assertion failed on expression: 'IsNormalized(dir)' errors are in the Console

Reproducible with: 2019.4.36f1, 2020.3.33f1, 2021.3.0f1, 2022.1.0b16, 2022.2.0a11

Notes:

Issue is no longer reproducible when the Directional Light is unparented or reorientated in the Scene view
Full error:
Assertion failed on expression: 'IsNormalized(dir)'
Assertion failed on expression: 'IsNormalized(dir)'
UnityEngine.GUIUtility:ProcessEvent (int,intptr,bool&)