Strange issue I cannot seem to fix: I want to edit the cropping of image thumbnails in the media gallery.
Some images will crop fine, others, when I go to save, I get a "Unable to save the image" message. I've checked for the usual culprits: file permissions, owners, etc. Two files will be exactly the same, yet one will work, and another will not. I've also had this issue with 2.9.2.
Any ideas as to what prevents a thumbnail cropping?