Hi Ion,
I have the same image problem after the last update. I run a website for our neighbourhood association. It’s mainly made with Rapidweaver, but since a few of years back I’ve been using WordPress with Decode’s blog in a window on the website’s first page: https://www.ctraa.co.uk. This is the direct access to the blog pages: https://www.ctraa.co.uk/wordpress/
Anyway, today I noticed that the featured images on the blog’s first page had become enormous, i.e. full size, stretching well beyond the blog page’s margins. In addition, all images that used to be right or left of text are now above that text, and always of the left side.
This is true in preview mode and when looking at the final pages on the website as a regular visitor, while everything looks okay in edit mode.
Hope you can help!
Best regards
Thomas