markdown h1 header render error on windows and macos

[frank-lam]

Have you read the Contributing Guidelines on issues?

• I have read the Contributing Guidelines on issues.

Prerequisites

• I'm using the latest version of Docusaurus.
• I have tried the npm run clear or yarn clear command.
• I have tried creating a repro with https://new.docusaurus.io.
• I have read the console error message carefully (if applicable).

Description

When I compile the same Markdown file locally on two different systems, Windows and MacOS, I get two different effects.

Macos uses the first level title in Markdown as the title of the current document, but Windows displays both.

Personally, I think the preview method in MacOS is better.

Hopefully, officials can fix this problem by adding configuration, so as to avoid the preview differences between different systems.

macos

windows

Reproducible demo

No response

Steps to reproduce

NA

Expected behavior

NA

Actual behavior

NA

Your environment

{
"name": "notes.frankfeekr.cn",
"version": "0.0.1",
"private": true,
"scripts": {
"docusaurus": "docusaurus",
"start": "docusaurus start",
"build": "docusaurus build",
"swizzle": "docusaurus swizzle",
"deploy": "docusaurus deploy",
"clear": "docusaurus clear",
"serve": "docusaurus serve",
"write-translations": "docusaurus write-translations",
"write-heading-ids": "docusaurus write-heading-ids"
},
"dependencies": {
"@docusaurus/core": "^2.0.0-beta.18",
"@docusaurus/preset-classic": "^2.0.0-beta.18",
"@easyops-cn/docusaurus-search-local": "0.23.0",
"@mdx-js/react": "^1.6.22",
"clsx": "^1.1.1",
"plugin-image-zoom": "^1.1.0",
"prism-react-renderer": "^1.3.1",
"react": "^17.0.1",
"react-dom": "^17.0.1"
},
"browserslist": {
"production": [
">0.5%",
"not dead",
"not op_mini all"
],
"development": [
"last 1 chrome version",
"last 1 firefox version",
"last 1 safari version"
]
}
}

Self-service

• I'd be willing to fix this bug myself.

[Josh-Cena]

Duplicate of #7044