I am using the scrbook (KOMA Script) class, as this MWE shows:
\documentclass[11pt,a5paper,twoside,BCOR=8mm,DIV=12,headings=normal,open=right]{scrbook}
\usepackage[ngerman]{babel}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{chngcntr}
\begin{document}
\part{Introduction}
\chapter{Lorem ipsum}
\counterwithout{figure}{chapter}
\begin{figure}[h!]
My figure here.
\caption{My caption}
\end{figure}
\end{document}
It's working, by and large, with one exception: The caption reads
Abbildung 1.: My caption
Notice the superfluous dot before the colon? It's clearly due to using parts; if I stick to chapters and sections only it's formatted as intended.
Any bright ideas?