title: LaTeX beamer class: Words are completely broken
body: <p>The following LaTeX code gives me a completely broken pdf file, where words are totally random broken.</p>
  <pre><code>\documentclass[12pt,xcolor=dvipsnames]{beamer}
  \setbeamertemplate{navigation symbols}{}
  
  %\usepackage{beamerthemeshadow}
  
  \usepackage[german]{babel}
  \usepackage[utf8]{inputenc}
  
  %beamer settings:
  \setbeamertemplate{navigation symbols}{}
  %\beamertemplatenavigationsymbolsempty
  
  \title{Homomorphic Encryption - Paillier Encryption}
  \date{21.06.2022}
  \author{Name 1\\Name 2}
  
  \begin{document}
  \frame {
      \titlepage
  }
  \section{Definitionen}
  \begin{frame}
  \frametitle{Pre - Fully Homomorphic Encryption}
  \begin{definition}[Fully Homomorphic Encryption]
  % Quelle: https://cacm.acm.org/magazines/2010/3/76275-technical-perspective-a-first-glimpse-of-cryptographys-holy-grail/fulltext
  Eine eine homomorphe Verschlüsselung ist eine FHE, wenn auf dem Ciphertext jedwege mathematische Operationen ausgeführt werden können.
  \end{definition}
  \end{frame}
  \end{document}
  </code></pre>
  <p><a href="https://i.stack.imgur.com/8Bdw8.png" rel="nofollow noreferrer">See resulting image here</a></p>
  <p>The words are fixed again, if I use one of the beamer templates. But I don't want to use one of them.</p>