Created attachment 219711 [details]
example of pdf

In a pdf file created with pdftex using Tikz, the patterns are not rendered correctly. Namely, the pattern spills out of the shape they're supposed to fill. The problem does not appear with Okular or Acrobat Reader.

Steps to reproduce:

compile the following code with pdflatex

\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{patterns}
\begin{document}
\begin{tikzpicture}
    \filldraw[pattern=north east lines] (0,0) circle[radius=5cm];
\end{tikzpicture}
\end{document}

or download the attached pdf file (created using the above code).

When viewed with evince, the pattern spills out of the circle; but does not when opened with okular or acroread.