Same (multi) columns width with different margins in Beamer

Question

I am using Modern Theme from https://github.com/matze/mtheme. When I try to use double column for one slide, the size of the margins are different. My code is as follows:

\documentclass{beamer}
\usetheme{metropolis}           % Use metropolis theme
\begin{document}
\begin{frame}{Introduction: Current Government - Political Change}
\begin{columns}[t]
\begin{column}{0.5\textwidth}
\begin{center}
\textbf{Political Change: Ministry Creation}
{\small \begin{itemize}
\item Ministry of Family, Community, Cooperative and Associative Economy. 
        \begin{itemize}
        \item  Work for the multiplication, strengthening, development and promotion of the Small Business of the Family Economy. 
        \item Focus on: Tourism, gastronomy, handicrafts, production of the family agriculture and services to the tourism.
        \end{itemize}
        \end{itemize}}
\end{center}
\end{column}
\vrule{}
\begin{column}{0.5\textwidth}  %%<--- here
    \begin{center}
    \textbf{Characteristics of the self-employed workers:}
    {\small \begin{itemize}
    \item Ministry of Family, Community, Cooperative and Associative Economy. 
    \begin{itemize}
    \item 
    \end{itemize}
    \end{itemize}}
    \end{center}
 \end{column}
\end{columns}
\end{frame}
\end{document}

And my results are:

This is another slide with the same problem:

What can I do to get the same margins?

Best Regards,

Answer 1

Two columns of .5\textwidth each cannot fit on a slide, as there is some distance between the columns. Either use onlytextwidth or smaller columns or even better both.

\documentclass{beamer}
\usetheme{metropolis}           % Use metropolis theme

\begin{document}

\begin{frame}{your frame}
    \begin{columns}[t]
        \begin{column}{0.5\textwidth}
            \rule{\textwidth}{3cm}
        \end{column}
        \vrule{}
        \begin{column}{0.5\textwidth}
            \rule{\textwidth}{3cm}
        \end{column}
    \end{columns}
\end{frame}


\begin{frame}{onlytextwidth}
    \begin{columns}[t, onlytextwidth]
        \begin{column}{0.5\textwidth}
            \rule{\textwidth}{3cm}
        \end{column}
        \vrule{}
        \begin{column}{0.5\textwidth}
            \rule{\textwidth}{3cm}
        \end{column}
    \end{columns}
\end{frame}

\begin{frame}{smaller columns}
    \begin{columns}[t]
        \begin{column}{0.45\textwidth}
            \rule{\textwidth}{3cm}
        \end{column}
        \vrule{}
        \begin{column}{0.45\textwidth}
            \rule{\textwidth}{3cm}
        \end{column}
    \end{columns}
\end{frame}

\begin{frame}
    \rule{\textwidth}{3cm}
\end{frame}

\end{document}