I upload a new file and I click the green checkmark, but then the image disappears and no logo is shown (just the title). I get the same error in Chrome and Firefox (I’m on the latest macOS).
I’ve tried uploading different images and I’ve gotten the same result (both png and jpg).
I have S3 enabled but I can upload those images when creating a post and they display correctly, so I don’t think that’s the issue.
I believe images are being uploaded before clicking to the green checkmark, could you check if the logo is present and where in your bucket ? original/_X ?