# Which section in the header with twocolumn book?

I'm wondering about the logic behind which section name is displayed in the header with a twocolumn book. My MWE:

\documentclass[twocolumn]{book}

\usepackage{lipsum}

\begin{document}

\chapter{Foo}

\section{Bar}
\lipsum[1-15]

\section{Baz}
\lipsum[6]

\section{Qux}
\lipsum[7]

\section{Quux}
\lipsum[8]

\section{Quuux}
\lipsum[9]

\end{document}


As you can see, the first section Bar spans pages 1 and 2 and parts of page 3. Then, on page 3, there are three sections Baz, Qux, and Quux. The header of page 3 contains the header QUX which is the title of the first section in the second column.

I didn't expect this. Why not one of the other section titles? What is the logic behind this? How could I make the title of the last section be displayed in the header?

-

... the actual logic behind the behaviour is that you can't change something after decades of use, as people rely on it. If you add \usepackage{fixltx2e} it will work as intended.
Thanks for the pointer to fixltx2e. "Nevertheless, there are problems in LaTeX that it “would be nice” to correct" :) – user10883 Jan 30 '12 at 11:04