This is something that was also on my radar as well for a while. There seem to be some additional steps up, since opening & trying to save the same image once revealed the issue; but at a later date, the same image was being picked up properly (format wise). A few days ago, the issue reproduced(at home) with the image from [this link](https://www.google.com/search?q=gmo+free+zone&client=firefox-b-d&source=lnms&tbm=isch&sa=X&ved=2ahUKEwjb9dq-y4PoAhVto4sKHWGlCr4Q_AUoAXoECAsQAw&biw=1111&bih=471#imgrc=od74wJuJlLRXIM) but trying today again it seems to be working fine.
Bug 1617623 Comment 3 Edit History
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This is something that was also on my radar as well for a while. There seem to be some additional steps up, since opening & trying to save the same image once revealed the issue; but at a later date, the same image was being picked up properly (format wise). A few days ago, the issue reproduced(at home) again with the image from [this link](https://www.google.com/search?q=gmo+free+zone&client=firefox-b-d&source=lnms&tbm=isch&sa=X&ved=2ahUKEwjb9dq-y4PoAhVto4sKHWGlCr4Q_AUoAXoECAsQAw&biw=1111&bih=471#imgrc=od74wJuJlLRXIM) but trying today again it seems to be working fine.