Hi List

I have the following MWE:

   * A section

   ** A Frame

   *** A left column
      :PROPERTIES:
      :BEAMER_COL: 0.48
      :END:

   *** A right column
      :PROPERTIES:
      :BEAMER_COL: 0.48
      :BEAMER_ACT: <2->
      :END:


And I would expect the following tex output:


   \section{A section}

   \begin{frame}{A Frame}

   \begin{columns}
   \begin{column}{0.48\columnwidth}
   \end{column}

   \begin{column}<2->{0.48\columnwidth}
   \end{column}
   \end{columns}

   \end{frame}

But the overlay specification is missing on the second column and I 
guess this is a bug?