If you are not in the "Getting Started" section of the Guide, and navigate to the "Tools and Features" or "How to Build a Product" sections of the Guide, the "Getting Started" navigation items disappear.
You can view this issue by comparing the nav menu between the following URLs:
https://docs.particle.io/guide/getting-started/intro/electron/
vs.
https://docs.particle.io/guide/tools-and-features/intro/

vs.
