PDF rendering issue (incorrect in FF30; correct in FF24)

[hochhaus]

I have an example PDF which renders correctly in FF24, but incorrectly in FF30.

http://hochhaus.us/HeadBodyFoot.pdf (attached HeadBodyFoot.pdf )

This PDF contains three logical entities (a header, a body and a footer). When rendered in Adobe Reader, Chrome's built in reader, PDF.js in FF24 and Apple Preview all three entities are visible. For example:

However, when rendered from PDF.js in FF30 only the footer is visible. For example:

Without knowing anything about PDF.js my guess would be that this has something to do with how different "regions" of the PDF are cropped. Is this the type of issue that the PDF.js team is interested in resolving? If so, what can I do to provide more helpful debugging information?

[Snuffleupagus]

This is a regression from PR #4161.

[yurydelendik]

Looking at the operations performed, looks like PDF.js is confused somewhere with lots of matrix transformations (flipping axis-Y):

I was looking at e.g. "Body"-text layer and its mask image, they were flipped on axis-Y, so their composition produced empty image.

[yurydelendik]

@hochhaus are you the author of the HeadBodyFoot.pdf and can we use it in our test suite?

[hochhaus]

@yurydelendik Yes, I am the author. Yes, you can use it in the test suite. Thanks for your work on this issue.