User Agent: Mozilla/5.0 (X11; Linux i686; rv:34.0) Gecko/20100101 Firefox/34.0 Build ID: 20141201111833 Steps to reproduce: Open the PDF at https://ece.uwaterloo.ca/~dwharder/NumericalAnalysis/02Numerics/Double/paper.pdf in the Firefox PDF viewer. Actual results: Black bars were shown instead of the text. Expected results: The text should have been displayed.
I'm not able to reproduce it with FF35 on Win 7. Could you attach a screenshot of what you see, please. NB: the PDF rendering is ugly, not only in Firefox. It looks like a bad scanned PDF.
Created attachment 8553078 [details] black rectangles Reproduced with latest Nightly 38.0a1 2015-01-21 under Ubuntu 12.04 LTS 32-bit.
It looks specific to Linux.