Hello. Users report that Facebook embed videos display incorrect (video is bigger than player container).
Example:
https://stranakrovi.net/videos/62440-ocherednoe-unichtozhenie-armyanskikh-band-formirovanij
https://www.facebook.com/107126604167437/posts/218393749707388/
https://www.facebook.com/watch/?v=2875938076022672
I can see problem in Safari. Other users on Yandex Browser and Google Chrome (also on mobile).
Thanks.
UPDATED: Original video not available for embedding anymore, but you can try another one.