1

I have two minipages aligned to the top of a frame (I used the option [t] on the frame and the two minipages).

If I had elements in one of the minipage, the other minipage goes down.

I have reproduced a small example (pdf link):

\documentclass{beamer}

\begin{document}

\begin{frame}[t]
    \begin{minipage}{0.58\linewidth}
        \begin{tabular}{c}\hline
            \textbf{Header}    \\\hline
            \only<2->{ line2\vspace{6cm}\\\hline} 
        \end{tabular}
    \end{minipage}\hfill
    \begin{minipage}{0.4\linewidth}
        \begin{block}{Text}
            text\\
        \end{block}
    \end{minipage}

\end{frame}

\end{document}

Do you know how to avoid this behavior?