theme.json default heading property doesn't show in h1-h6 tabs

[mr660]

Description

I'm developing custom FSE theme. I wanted to define default lineHeight for all my headings.

Setting up styles.elements.heading.typography.lineHeight doesn't show in admin panel in sections related to h1-h6 (it displays default wordpress value which is 1.5). It does show in "All" section.

I expect it to display default value i've set up for all headings when i didn't specify value for h1-h6 separately.

theme.json:

{
  "version": 3,
  "settings": {
    "typography": {
      "defaultFontSizes": false,
      "fluid": true,
      "lineHeight": true,
      "fontSizes": [
        {
          "name": "Headline 1",
          "fluid": {
            "min": "30px",
            "max": "98px"
          },
          "size": "98px",
          "slug": "h1"
        },
        {
          "name": "Headline 2",
          "fluid": {
            "min": "26px",
            "max": "61px"
          },
          "size": "61px",
          "slug": "h2"
        },
        {
          "name": "Headline 3",
          "fluid": {
            "min": "20px",
            "max": "41px"
          },
          "size": "41px",
          "slug": "h3"
        },
        {
          "name": "Headline 4",
          "fluid": {
            "min": "18px",
            "max": "35px"
          },
          "size": "35px",
          "slug": "h4"
        },
        {
          "name": "Headline 5",
          "fluid": {
            "min": "16px",
            "max": "24px"
          },
          "size": "24px",
          "slug": "h5"
        },
        {
          "name": "Headline 6",
          "fluid": {
            "min": "14px",
            "max": "20px"
          },
          "size": "20px",
          "slug": "h6"
        },
        {
          "name": "Subtitle 1",
          "size": "16px",
          "slug": "subtitle-1"
        },
        {
          "name": "Subtitle 2",
          "size": "14px",
          "slug": "subtitle-2"
        }
      ]
    }
  },
  "styles": {
    "elements": {
      "heading": {
        "typography": {
          "lineHeight": "1.1"
        }
      },
      "h1": {
        "typography": {
          "fontSize": "var:preset|font-size|h-1"
        }
      },
      "h2": {
        "typography": {
          "fontSize": "var:preset|font-size|h-2"
        }
      },
      "h3": {
        "typography": {
          "fontSize": "var:preset|font-size|h-3"
        }
      },
      "h4": {
        "typography": {
          "fontSize": "var:preset|font-size|h-4"
        }
      },
      "h5": {
        "typography": {
          "fontSize": "var:preset|font-size|h-5"
        }
      },
      "h6": {
        "typography": {
          "fontSize": "var:preset|font-size|h-6"
        }
      }
    }
  }
}

Step-by-step reproduction instructions

1. Set up theme.json like in example
2. Go to Appearance->Editor
3. Go to Styles
4. Open Styles side panel
5. Go to Typography->Headings
6. "All" Headings shows line-height set to 1.1
7. H1 to H6 displays 1.5

Screenshots, screen recording, code snippet

No response

Environment info

• Wordpress 6.6.2
• PHP 8.3.11
• nginx/1.27.1
• MariaDB 11.5.2

Please confirm that you have searched existing issues in the repo.

• Yes

Please confirm that you have tested with all plugins deactivated except Gutenberg.

• Yes

[carolinan]

Hi!
This issue is already discussed in #64670, please continue the conversation there. I am closing this as a duplicate.