Onebox previews showing correctly in preview but not when posted


We’re having an issue getting link previews to work on one of our other subdomains. We have whitelisted our discourse server IP on our Wordpress site & on the cloudflare level.

When pasting links within the create topic section, it shows correctly in the live preview. However when the topic is saved, it just shows the URL.

On the topic

Seems fine on new posts, but not when editing existing ones. These were created from the RSS feed but previews not worked as expected.