Suddenly all of my sites starting to show 3 images to share a link on facebook instead of the one defined in og:image.
linter shows the og:image is defined and i don't have the warning of its dimensions because its size is 200x200px.
for example:
Debug: https://developers.facebook.com/tools/debug/og/object?q=http%3A%2F%2Falertasaude.com%2F
if you post it on a wall it will show 3 different images (in this case the third one is the one defined on og:image)
I'm having the same problem. My page had an og:image that was sized under 200px... which I fixed by directing to a compliant version of the image. Now my Linter data shows correct without errors, but the three-image thing still happens.
Fb used to allow you to get by with a 50x50, but I'm guessing they're changing their requirements, and somehow the Linter data isn't flushing correctly. Try directing to a 200x200 and cross your finger that it gets fixed in the next crawl.
Everything was ok a few weeks ago even with more than 3 images.
What I did, trying to fix this recent issue, is create 5 images with all same dimensions 500x300, paste and adjust photo inside. then create og:image tag with different names.
Linter recognize all images (no error) an d create thumbnails. But when sharing the page in facebook, I get only 3 thumbnails. If I reorder images in the html code, and check in linter again, I get the same issue with different images. I also tried to change filenames (with -, _, digits and letters only) I did that 5 or 6 times in a row with the same result.
Does anynone have a solution?