Sorry for the inaccurate bug name, but I had no idea how to describe it. If you render the attached page in cairo (full doc: http://www.dmi.unict.it/~cutello/introduzione.pdf), the background makes the text almost unreadable.
Created attachment 70041 [details] Page 1 from the document
Created attachment 70042 [details] Cairo rendering (wrong)
Created attachment 70043 [details] Splash rendering (correct)
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