[Poppler-bugs] [Bug 42064] New: Uncorrect rendering with poppler-qt4 when showing pdf's with transparency embedded inside other pdf's

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=42064

             Bug #: 42064
           Summary: Uncorrect rendering with poppler-qt4 when showing
                    pdf's with transparency embedded inside other pdf's
    Classification: Unclassified
           Product: poppler
           Version: unspecified
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: arthur backend
        AssignedTo: poppler-bugs at lists.freedesktop.org
        ReportedBy: knuckles at gmail.com


Created attachment 52592
  --> https://bugs.freedesktop.org/attachment.cgi?id=52592
testcase showing the issue

The attached pdf has incorrect rendering on okular and open-pdf-presenter
(which both use poppler-qt4), but no issues with evince nor acroread.

The only difference between the two pages is that a white background was
inserted.

pdflatex file used to generate the test case is:
\documentclass{beamer}
\usepackage[english]{babel}

\begin{document}
\setbeamercolor{background canvas}{bg=white}
\frame{Broken
Version\\\includegraphics[width=\columnwidth,keepaspectratio]{vbox.pdf}}

\setbeamercolor{background canvas}{bg=}
\frame{OK
Version\\\includegraphics[width=\columnwidth,keepaspectratio]{vbox.pdf}}
\end{document}

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