Font size "huge" does not respect the size specified in theme.json

[iamtakashi]

Description

Let's say, there is a font size called huge that is 100px in a theme.

On the front of the site, an element with the huge size appears 100px, as expected. However, in the editor, it appears 42px.

To demonstrate the issue, I've added a font size, huge to TT3's theme.json, and changed the size of the heading in home.html

{
	"settings": {
		"typography": {
			"fontSizes": [
				{
					"size": "100px",
					"slug": "huge",
					"name": "Huge"
				}
			]
		}
	}
}

Front of site	Editor

The size is overridden by this, which comes from here. The !important seems to be the problem.

If I deactivate Gutenberg (trunk), the font size will return to 100px in the editor.

Step-by-step reproduction instructions

1. Activate a theme that has a font size called huge or add the size like above in a theme.json
2. Specify a text element like a heading to use the huge size.
3. See the discrepancy in size between in the editor and the front of the site.

Screenshots, screen recording, code snippet

No response

Environment info

WP 6.3.1.
Gutenberg trunk

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

[github-actions]

Hi,
This issue has gone 30 days without any activity. This means it is time for a check-in to make sure it is still relevant. If you are still experiencing this issue with the latest versions, you can help the project by responding to confirm the problem and by providing any updated reproduction steps.
Thanks for helping out.

[iamtakashi]

I'm still having this issue. If a theme uses a size with a slug huge, the huge size text will be always 42px in the editor instead of the value set in the theme.json.

[t-hamano]

Thanks for the report.

This issue is similar to #59701 and I believe it has already been resolved. Tested with WP6.5-RC1.

I would like to close this issue, but if this issue is not resolved in the latest Gutenberg or WP6.5, please let me know.

Editor

Front end