How to reproduce:
1. Open the attached project (ParticleRendererTest.zip)
2. Open scene Scenes/SampleScene
3. In the Hierarchy window, select the GameObject "Particle System"
4. In the Inspector view, under the Particle System component, right-click any of the modules (Emission, Shape...) except for Renderer
5. Right-click the Renderer module

Expected result: a context menu appears after right-clicking each module, including Renderer
Actual result: no context menu appears after right-clicking the Renderer module

Reproducible with: 2020.3.12f1, 2020.3.20f1, 2021.1.9f1, 2021.1.25f1, 2021.2.0a18, 2021.2.0b16, 2022.1.0a12
Not reproducible with: 2019.4.31f1, 2020.3.11f1, 2021.1.0a1, 2021.1.8f1, 2021.2.0a1, 2021.2.0a17

Notes: a NullReferenceException error is thrown when right-clicking the Renderer module from Editor versions 2020.3.12f1 through 2020.3.15f1, and 2021.1.9f1 through 2021.1.14f1, but not on other versions