Link Previews not displaying for certain sites

[Aesculapius]

Summary
Link Previews are are only generated for some sites.

Steps to reproduce
Constant and consistent.

Expected behavior
All sites display previews.

Observed behavior
Posting links, regardless of client, will resolve in a preview for many, but not all sites. Current using Free Enterprise version 10.9.0. Running in docker container in an LXC on Proxmox. The container can access the internet and DNS is working. The issue is consistent and does not fluctuate. Logs show no errors or other helpful info even with DEBUG enabled.

Working Site examples: youtube, AP news, CNN, Github
Non-working site examples: reddit, tiktok, science.org

First noticed when running version 9.x. Upgraded to 10.9 with no improvement.

[coolbrys]

I have been having the same issue for a few months. I used the Turnkey Linux ISO and upgraded it to 10.6 and now 10.9.1, but unfortunately it is still occuring. I’ve poked around trying to figure out what I can do, but I haven’t had any luck so far.