I am producing some latex beamer slides (but I think it is not a beamer specific question per se).
I have the following:
\\begin{itemize}
\\item Issue1
\
Here is Geoffs code with some small adaptions (just for other beamer users)
\begin{frame}{Example}
\begin{itemize}
\item The long Issue 1
\tikz[remember picture] \node[coordinate,yshift=0.7em] (n1) {}; \\
spanning 2 lines
\item Issue 2
\tikz[remember picture] \node[coordinate, xshift=1.597cm] (n2) {};
\item Issue 3
\end{itemize}
\visible<2->{
\begin{tikzpicture}[overlay,remember picture]
\draw[thick,decorate,decoration={brace,amplitude=5pt}]
(n1) -- (n2) node[midway, right=4pt] {One and two are cool};
\end{tikzpicture}
} % end visible
\end{frame}
Ressult (2nd slide of that frame):
The adaptions are:
(n1 -| n2) -- (n2)
instead of (n1) -- (n2)
.