Substack Newsletters format change? Sections not rendering

It looks like substack have changed some of their HTML around 1st June 2022.

Newsletters are now not longer properly rendering. What I am seeing is that sections are being condensed into just a link or a header. Happened across two of the substacks I subscribe to. Inspection of the HTML shows a bunch of new headers (right at the top of the file) in the the new version.

If I go to the email, extract the HTML part and view locally in my browser it works okay. So I assume it is an interaction with the newsblur website.

Sample link (probably not viewable to anyone except the admin). The “great” “copy” at the top are whole paragraphs

https://www.newsblur.com/newsletters/story/8622571:50c645

Can you post two screenshots of the newsblur view of the email and your mail readers view?

Ok, I think I found the issue. Looks like they added a <text> element around text, so I added it to a allowlist for the HTML sanitizer. It won’t work retroactively, but future newsletters should come in correctly. Let me know how that works out.

I got one an hour ago ( 19:15 UTC on the 7th) and it still seems to have the problem.

https://www.newsblur.com/newsletters/story/8094692:809498

Still not quite there. The content in elements is still not showing up.

I’ve subscribed to the newsletter and will see if I can reproduce the bug. This may take a bit of time, but ping me in a week or two if it’s still happening, since there’s a bunch of steps I need to take to make the debugging work correctly for a newsletter.

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