Issue #274 new

# Make plain frames really fillable by canceling sidebars (and not only hidding them)

denisbitouze
created an issue

Because sidebars in some themes are only hidden and not actually canceled, plain frames are not really fillable, despite what is written in beamer's documentation, page 61. The following MCE shows a drawback of the current situation where title frame cannot be horizontally centered in plain frames with some themes (the commented code is a workaround but is tricky especially for beginners).

\documentclass{beamer}
\usetheme{PaloAlto}
\begin{document}
% \begingroup
% \makeatletter
% \setlength{\hoffset}{-.5\beamer@sidebarwidth}
% \makeatother
\title{Foo}
\author{Bar}
\begin{frame}[plain]
\maketitle
\end{frame}
\end{document}