I am using PDF::API2 to construct simple ( very simple in this case ) PDFs, with
some text objects and some images that come from png files.

I have noticed for quite a while now that when evince opens these PDFs, the
images are corrupted badly - they appear mostly black, with small smears of
colours from the original image across the black. If I zoom in & out, this
corruption will disappear.

However, more importantly, I have just discovered that this corruption occurs
*every* time I print from evince.

I have tested these PDFs in Acrobat, and they render and print perfectly. I am
attaching 3 small PDFs that demonstrate the issue. I can also supply the code
that generated the PDFs if required.

I am setting the 'Severity' to 'major', as this appears to affect rending /
printing of all images in PDFs I've come across. Drop the severity if you disagree.