Ghost not showing Images in new Posts anymore

Hello everyone,

I am running Ghost with the newest Docker Images for a few years without any major problems. But since a few weeks Ghost startet to behave strangely.
When i create a new Post that contains some Images, the Images dont show up on the site.
In the Editor i can see them fine, and according to the console they get also loaded when someone opens the page in a browser, but the pictures are not showing in the text.
The “old” posts all work as expected, only new post i create dont show any images.

any idea what that could be, and how i could fix it?