I am trying to create my own beamer theme and wish to create a right sidebar having the same hight as the slides. Unfortunately this is not the case.
\useoutertheme[right]{sidebar}
\setbeamercolor{sidebar right}{bg=lightgray, fg=black}
\setbeamersize{sidebar width right=1.8cm}
\usetheme[hideothersubsections]{}
Do you have any idea of how I can do it ?