For a while now, when uploading .jpg files, I regularly have the problem that they are uploaded with a gray bar and also several empty versions.
On the image in the attachment I tried to upload 2 images with 1 image appearing 5 times of which only one works with gray bar. The second image uploads twice whose thumbnail looks fine but the large version also has a gray bar.
I have not been able to find a solution on the internet so far, are there more people who have this and know how to fix it?
I came across this issue with the same thing happening to me.
I found the issue for me was that the PHP upload_max_filesize was set to a smaller size than the file I was uploading.