With Ubuntu 17.10 and earlier, I could use the following source in order to produce a Beamer presentation (using pdflatex) with a footline telling me how much frames have already passed:
\documentclass{beamer}
\usepackage[utf8]{inputenc}
\usepackage[english]{babel}
\usetheme[compress]{Berlin}
%\setbeamertemplate{footline}[text line]{%
% \parbox{\linewidth}{\vspace*{-8pt}\hfill\insertpagenumber\,/\,\inserttotalframenumber}}
\setbeamertemplate{footline}[frame number]
\setbeamertemplate{navigation symbols}{}
\title{Test}
\author[shortname]{Test \inst{1}}
\institute[shortinst]{\inst{1} Test}
\date{Test}
\begin{document}
\begin{frame}
\titlepage
\end{frame}
\section{Section}
\begin{frame}{Test}
\begin{itemize}
\item Test 1
\item Test 2
\end{itemize}
\end{frame}
\begin{frame}{Test 2}
\begin{itemize}
\item Test 3
\item Test 4
\end{itemize}
\end{frame}
\end{document}
Since I use Ubuntu 18.04, it just produces a pdf without the footline when I use \setbeamertemplate{footline}[frame number]. When I use
\setbeamertemplate{footline}[text line]{%
\parbox{\linewidth}{\hfill\insertframenumber\,/\,\inserttotalframenumber}}
instead, it works again, but the page number is a little bit nearer to the bottom of the page and the color is different.
Unfortunately, the version (pdfTeX 3.14159265-2.6-1.40.18 (TeX Live 2017/Debian)) does not seem to differ, it only says Compiled with poppler version 0.62.0 and in 17.10 Compiled with poppler version 0.57.0.
Is this a known change, or could this caused by other installation problems? I did install texlive-full in both cases. And is there a way to get the old formatting back?
EDIT: The duplicate states a solution, since I do not need to use navigation symbols, using \setbeamertemplate{navigation symbols}{\tiny\insertframenumber\,/\,\inserttotalframenumber} is sufficient (this adds total frame number as well).