macOS: Some letters render funny on markdown preview

[afgomez]

Description

Some letters seem to not render correctly on the markdown preview, at least with certain fonts. I'm not sure since when this is happening. This is the first time that I notice it. I had that font set up for several weeks and I haven't noticed it before.

Steps to reproduce:

1. Set your "ui_font_face": "SF Pro" in your settings (https://developer.apple.com/fonts/)
2. Open the release notes

When I remove the ui_font_face setting things seems to render better.

Expected Behavior:

Some letters render thinner than they should with that font.

🖼️ See screenshots

Actual Behavior:

All letters render correctly

Full (relevant) settings

{
  "ui_font_family": "SF Pro",
  "buffer_font_family": "PragmataPro",
  "buffer_font_size": 14,
  "buffer_line_height": { "custom": 1.4 },
  "terminal": {
    "line_height": "standard"
  },
}

Zed Version and System Specs

Zed: v0.191.2 (Zed Preview)
OS: macOS 15.5.0
Memory: 48 GiB
Architecture: aarch64