parbox with only width setting, automatic height gets height 0pt (lyx 1.5)

[Micha Feigin]

I seem to be having a problem with some tex code imported into lyx 1.5
It contains an image and only width originally, but lyx insists on inserting
height zero which completely messes up the rendering. (image is interleaved
with text)

i.e, the following

    \parbox{0.24\textwidth}{
      \begin{center}
        \includegraphics[width=0.22\textwidth, height=0.33\textwidth]
        {eigvec_-0_0009.jpg}\\
        $\lambda = -0.0009$
      \end{center}
    }
 
is imported as

\parbox[c][0pt]{0.24\textwidth}{%


\begin{center}
\includegraphics[width=0.22\textwidth,height=0.33\textwidth]{images/eigvec_-0_0009}\\
 $\lambda=-0.0009$ 
\par\end{center}%
}%

Am I doing something wrong or is this a bug?

Thanks