This just started after updating a few weeks ago.
My client always uses large images in her post. She has never set a featured image. Publicize always used to grab the image in her post and use it as a thumbnail. Suddenly it started using her logo.
Latina Vega Photography is site
You can see posts where the thumbnail is a weird section of her logo, and others that were a gorgeous thumbnail.
NOthing about those posts was different.
I have completely disconnected and unauthorized wordpress.com as an app. Then deactivated and reinstalled Jetpack and reconfigured Publicize. It's got all the permissions to post, monitor etc.
now I tried a post and set a featured image, and it worked as a thumbnail, but without it, it did not pull image from post like it should if there is no featured image. It pulled logo.
I'm at my wits end with this.