ALL text formatting broken after any HTML in narratives

[sidneymbell]

Expected:
<p>some **bold** text</p> --> some bold text

Observed:

• <p>some **bold** text</p> --> some **bold** text
• </p> some **bold** text --> some **bold** text
• </p> some <b>bold</b> text --> some text (missing!?!?)

Example:
https://github.com/nextstrain/narratives/blob/master/interpretation-examples.md
https://nextstrain.org/narratives/interpretation-examples?n=4

[joverlee521]

Auspice renders narrative Markdown text through marked, which uses GitHub Flavored Markdown (GFM) by default.

According the GFM guide, Markdown syntax does not work within HTML blocks since text is treated as raw HTML text. There also needs to be a blank line after the HTML tags to separate it from the rest of the Markdown content. So the main problem outlined in this issue is a limitation of the Markdown syntax rather than a bug.

The specific observed behavior with the <b> tag not working is because it is not included in Auspice's ALLOWED_TAGS. We can allow <b> tag, but in the meantime users can bold text using the <strong> tag.