Post previews in Telegram

I noticed the previews in Telegram for post-links do not get the actual post preview.

Actual post link:

Some related SO:

For example, I can randomly /?v=3333 to my link, and can see that Telegram fetches new metadata for the URL, but in case of a specific post, the same is shown, makes me wonder if the issue is on Discourse side?

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I’m not sure this is Discourse-specific, I tested the URL above in a) a different Discourse instance and b) an Open Graph tester like opengraph.xyz, and both show the correct excerpt.

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Perhaps Telegram is doing something different… the issue is not happening in Discord as well.

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This is what Telegram is looking at:

<link rel="canonical" href="https://meta.discourse.org/t/preparing-for-discourses-upgrade-to-ember-5/287211?page=3" />

Which links to: Preparing for Discourse's upgrade to Ember 5 - #48 by david

This is matching with the content Telegram is fetching as seen in my screenshots :thinking:

EDIT - this post from 2022 seems related.

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