I have the similar cas, when I uploaded a photo, it showed a red belt as the joint photo: https://si3.photorapide.com/invites/photos/2022/03/148l95.jpg
2 months before, the upload was Ok, than suddenly, it doesn’t work.
For the upload Cover Image is OK.
my WP is 5.9.2
Can someone help me ?
thank you so much !