[Tex/LaTex] Minipages and spacing between \paragraph

Question

I am using \paragraph inside a minipage. Don't know why, but the usual space above \paragraph does not appear. Then I have a small minipage in the \paragraph. Now spacing between \paragraph is increased (maybe back to normal). Why is this happening, and how can I fix it? I would like \paragraph to behave the same as outside the minipage (no vertical space if at the top of the page, slightly elastic vertical space thereafter, don't need numbering).

\documentclass{article}

\begin{document}

\noindent
\begin{minipage}[t]{0.9\linewidth}
\paragraph{A} Blah 
\paragraph{B} Blah 
\paragraph{C} Blah 
\newline
\begin{minipage}[t]{0.5\linewidth}
BLAH BLAH
\end{minipage}
\newline
More blah 
\paragraph{D} Blah 
\paragraph{E} Blah 
\end{minipage}

\end{document}

Answer 1

We can use \mbox{} in the beging of the minipage

\documentclass{article}

\begin{document}
\noindent
\begin{minipage}{0.9\linewidth}
\mbox{}
\paragraph{A} Blah 
\paragraph{B} Blah 
\paragraph{C} Blah 
\newline
\begin{minipage}[t]{0.5\linewidth}
BLAH BLAH
\end{minipage}
\newline
More blah 
\paragraph{D} Blah 
\paragraph{E} Blah 
\end{minipage}

\end{document}

An other solution is \parbox

\documentclass{article}

\begin{document}

\noindent
\parbox[t]{0.9\linewidth}{
\paragraph{A} Blah 
\paragraph{B} Blah 
\paragraph{C} Blah 
\newline
\parbox[t]{0.5\linewidth}{
BLAH BLAH
}
\newline
More blah 
\paragraph{D} Blah 
\paragraph{E} Blah 
}

\end{document}