Description of issue:
I’m having difficulty getting my preview images to render consistently when testing with the twitter card validator. I’m serving a vue app from a nodejs server, and serve static html for requests on the /cards endpoint, which is what the twitter validator sees. Testing with curl -A Twitterbot {url} gives expected results, I’m running out of ways to debug the problem. Please help :pray: .

URL affected (must be public):
https:// magic-the-gatherings .ue.r.appspot.com/

Troubleshooting steps attempted [note that we will not prioritise posts unless there is evidence of following the troubleshooting guides]:

  1. From webapp, generate image by clicking forge button.
  2. Wait until image is fully generated and card_id query param is added to url (ie https ://magic-the-gatherings.ue.r.appspot.com/cards/?card_id=xxx)
  3. Paste link into twitter card validator.
  4. Link preview load successful, all metatags detected, but preview image renders inconsistently.

(Note: had to break up my url, otherwise can’t post for some reason.)

Anyone?

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