can't use markdown footnote on mdx

[hanbyul-here]

MDX seems to offer its wrapper for the footnote, which breaks the container style of the page.
The code below

...
    [Explore How COVID-19 Is Affecting Earth's Climate](/covid19/discoveries/climate/climate-change-and-covid "Explore How COVID-19 Is Affecting Earth's Climate")[^1]
  </Prose>
</Block>


<Block type="wide">
  <Prose>
  [^1]: Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras purus nisi, eleifend quis blandit sed, efficitur id sem. Nullam a orci odio. In vel nulla sit amet dolor egestas tempor. Nullam viverra, purus vel egestas cursus, risus turpis condimentum risus, sed consequat nisl lectus non arcu. Phasellus eu purus non augue faucibus dapibus eget vitae nisi. Sed quam ipsum, malesuada ut porta ac, sagittis rhoncus sem. Maecenas scelerisque auctor nisl eget lobortis. Etiam orci felis, euismod quis mattis non, pulvinar at nulla. Fusce at purus vel ex condimentum porta. Sed tem
  </Prose>
</Block>

will result in a stretched container like the one below.

[stephenkilbourn]

This may have been resolved somewhere else. The overflow is no longer occurring if I try to reproduce:

vs without the footnote: