Cannot define marker in note frontmatter

[x55xaa]

Scrolling through the documentation, I came across the mapmarker parameter. I wanted to define a marker in the frontmatter of my note, but the example provided in the docs doesn't seem to work.

example_note.md

---
location:
  - "32"
  - "-89"
mapmarker:
  icon: user        # Font Awesome icon name.
  color: 00ff00     # Hex color string. Optional.
  layer: false      # Whether or not to layer. Optional.
---

main.md

```leaflet
id: leaflet-map
coordinates: [32, -89]
markerFile: [[example_note]]
```

Am I doing something wrong or is this a bug?