This is a page with an image that’s affected (the product image, although this page looks just fine): https://pattyjansen.com/store/product/ambassador-1a-the-sahara-conspiracy-audio/
I checked the media library and developer tools and there is no conversion for this image, or any other image (I don’t think there was ever any bc Siteground).
Yet there must be something left over, because when I embed the page in a wordpress widget in a different subsite, you can see what happens in the very bottom of the right hand column here: https://pattyjansen.com/news/
(This is a different subsite in my multisite install)
Instead of a nice widget card, I get a ridiculous small horizontal strip of the image. This happens for all images I’ve uploaded recently. It’s like an invisible image setting has been changed somewhere and I’ve been trying all day to find it (I tried all corners of wordpress and the SQL database option settings). When I replace the image with an older image that I uploaded pre-August 2023, it suddenly behaves normally. Something happens during the upload process.