ToC broken when using jekyll-commonmark-ghpages

[wdhongtw]

Environment

• Minimal Mistakes version: 4.21.0
• Ruby gem or remote theme version: 3.1.2
• Jekyll version: 4.2.0
• Git repository URL: https://github.com/wdhongtw/sample-site
• GitHub Pages hosted (if yes provide URL to site):
• Operating system: Ubuntu server 20.04

Expected behavior

The ToC should be rendered like

But when using jekyll-commonmark-ghpages, the ToC is rendered like

Steps to reproduce the behavior

• Clone the sample jekyll site from the given URL
• In the project folder
  • bundle install
  • bundle exec jekyll server

Other

[iBug]

jekyll-toc bundled in the current version of the theme relies on Kramdown (Jekyll's default MD renderer). This will be fixed in the next release (#2752).