At the bottom of the homebrew subrace creation page, there is an option to add racial traits. However, whenever I click on this option,  no additional options for actually creating traits show up underneath it. Is this a bug, or is there just currently no way to make traits for subraces?

Almost two years later and I’m having the same problem. Maybe someone should look into this.

I'm not having this problem.  in the "Racial Traits" area of the homebrewer, I see both a + and a button that says "Add A Racial Trait."  Clicking the + reveals existing racial traits; clicking "Add A Racial Trait" takes me to a page where I can add racial trait info.

What device are you working on?  Do you see both the + and the "Add A Racial Trait" button?  Are you using any browser extensions, add blockers, or VPNs?

Turn your phone sideways, it needs the wider display.

Whenever I add a racial trait and click save it deletes it. It won't let me save racial traits.

Does your screen look like the below image? Just tested on my side with success so far.

You MUST fill out the Name, Description, and Feature Type fields or it won’t save. For feature type select “Granted.”