Responding in reverse order: <<Pomax, can you please share whether you get this behavior on pivix.net and mozilla.org or just on the former?>> Mozilla.org works fine, the problem is Firefox going "I will not save the image I already have, I will perform a _new_ network request", which can go wrong in quite a lot of ways, but most obviously goes wrong with pixiv (which has a 403 in place as anti-hot-linking counter measure). <<Right clicking and hitting save as works for me. Dragging creates a link>> Not actually a link, though - it's supposed to still be the same image; it looks like Jim found the change that introduced this?
Bug 1641270 Comment 12 Edit History
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Responding in reverse order: <<Pomax, can you please share whether you get this behavior on pivix.net and mozilla.org or just on the former?>> Mozilla.org works fine, the problem is Firefox going "I will not save the image I already have, I will perform a _new_ network request", which can go wrong in quite a lot of ways, but most obviously goes wrong with pixiv (which has a 403 in place as anti-hot-linking counter measure). <<Right clicking and hitting save as works for me. Dragging creates a link>> Not actually a link, though - it's supposed to still be the same image; it looks like Jim found the change that introduced the problem?