I set up the player card meta tags for my side and got the approval for my domain.
The player is working fine. However, the first state shown in the validator (and in the tweets) gives me a black square with a blue play button:
When clicking on that button, the view expands and my player is shown (as given in the twitter:player meta tag).
I’m wondering why the image is not shown in “initial state” (screenshot). The image URL is correct.