Header number overlapping the header text

Question

I have a problem just as the following picture. Long section names are placed in the header, which overlaps the header number, it will be only seen if one uses short words. I use the following code in my class file:

\automark[chapter]{chapter} \ihead{\headmark} \ohead{\pagemark}

I have tried to use code such as \mbox, but the previous correct header(like page 5) goes wrong. Thanks!

Answer 1

You can use a \parbox inside \ihead:

\ihead{\parbox[c][3\baselineskip][c]{.9\linewidth}{\headmark}}

Then the header must be enlarged. So you have to add headlines=3.25 to the class options. Alternatively you can use

\PassOptionsToPackage{headlines=3.25}{typearea}

before \documentclass{<your class>}.

\PassOptionsToPackage{headlines=3.25}{typearea}% option headlines is needed!
\documentclass{scrbook}
\usepackage[utf8]{inputenc}
\usepackage[ngerman]{babel}
\renewcommand\chaptermarkformat{}% to remove the chapter number in header

\usepackage{scrlayer-scrpage}
\automark[chapter]{chapter}

\clearpairofpagestyles
\ohead*{\pagemark}
\ihead{\parbox[c][3\baselineskip][c]{.9\linewidth}{\headmark}} 

\usepackage{blindtext}% only for dummy text
\begin{document} 

\chapter{bug 3 - Lange Abschnittsnamen werden in der Kopfzeile des D.o.kuments mit zu wenig Abstand gesetzt, was man nur sieht wenn man kurze Wörter verwendet und der Text lang genug ist.} 
\Blindtext[10]
\chapter{Kurzer Titel}
\Blindtext[10]
\end{document}

---

If your class uses the outdated package scrpage2 the example changes to

\PassOptionsToPackage{headlines=3.25}{typearea}% option headlines is needed!
\documentclass{scrbook}
\usepackage[utf8]{inputenc}
\usepackage[ngerman]{babel}
\renewcommand\chaptermarkformat{}% to remove the chapter number in header

\usepackage{scrpage2}
\pagestyle{scrheadings}
\automark[chapter]{chapter}

\clearscrheadings
\ohead[\pagemark]{\pagemark}
\ihead{\parbox[c][3\baselineskip][c]{.9\linewidth}{\headmark}} 

\usepackage{blindtext}% only for dummy text
\begin{document} 

\chapter{bug 3 - Lange Abschnittsnamen werden in der Kopfzeile des D.o.kuments mit zu wenig Abstand gesetzt, was man nur sieht wenn man kurze Wörter verwendet und der Text lang genug ist.} 
\Blindtext[10]
\chapter{Kurzer Titel}
\Blindtext[10]
\end{document}