Hi Sonja,
Yes, it’s a change made by WordPress in the recent update. All images should have the same issue unless their spacing is added through a different way method.
I believe WordPress is trying to streamline styling, including margins, which is why they removed it. See: https://wordpress.org/support/wordpress-version/version-6-1/#a-streamlined-style-system
Yes, it seems to be the case. We’ve had multiple tickets regarding this issue since the update, and since it’s a WordPress Block, what we advise is to re-add the spacing through custom CSS.
Sidenote: GenerateBlocks also has an Image Block which has spacing controls in its settings: https://docs.generateblocks.com/article/image-overview/
This can be an alternative to the WordPress Image Block.