I have tested Evince 2.22.1.1 poppler 0.8.2 (cairo), thanks to matteo,
and some bugs are fixed indeed, but not everything. For example, I just
had to try out some other files such as this one to stumble on problems.
Try saving all the images of that file: some of them will, some won't
(cannot be dragged, or no popup menu option). For an easy example, at
the last page, the bottom-right image can be saved, but the 3 other
images around it cannot.

On page 18, some of the images can be saved, others can not.

Also, sometimes some images are saved "flipped vertically" (but I'm not
sure if that is a bug, as it happened only with the PDFs from that
particular author).

Moreover, sometimes you can only save with right-clicking, you cannot
drag and drop for some really strange reason. For example, on page 3,
try drag and dropping the ugly faces. Sometimes they will work, and
sometimes they will *stop working*. Really weird.

Actually, I have found how to reproduce this. Initiate a drag operation,
then drop immediately in the middle of nowhere (inside evince for
example). Then, you won't be able to drag *anything* from the PDF again,
until you have switched to another window/application and come back. Not
100% reliable to trigger, but easy nonetheless.

So, in short, there seems to be 2-3 bugs hiding in there.

** Attachment added: "test case for bugs in 2.22.1.1 and poppler 0.8.2"
   
http://launchpadlibrarian.net/14694800/5%20-%20Perception%20de%20la%20forme%20et%20des%20objets.pdf

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Cannot save/copy images properly from evince
https://bugs.launchpad.net/bugs/210783
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