Bug in image size (ratio) with mobile version?

Hello,

I observed that, only for some images, the ratio is not kept when displaying the image (on iOS, with Safari).

But, all the more surprising, the same image shows the correct ratio if the user tap it to show it at maximal size.

Wouldn't there be a little bug with the image ratio on mobile, just when displaying the image in the text of a contributor? And being correctly handled when displayed at maximal size?

One recent example (with the blue Disney image): https://laboxideale.userecho.com/en/communities/1/topics/166-application-disney

Best regards.