Text after wrapfigure out of place

Question

After using {wrapfigure} and choosing the number of lines to wrap, a new paragraph still behaves as if I told it to continue wrapping. I'm sure that sounds confusing, here is an example. How can I fix my paragraphs to go back to normal after {wrapfigure}?

\documentclass[10pt]{article}
\usepackage{wrapfig}
\usepackage{graphicx}
\usepackage{lipsum}
\begin{document}
\lipsum
\begin{wrapfigure}[18]{l}{0.5\textwidth}
    \begin{center}
        \includegraphics[width=61mm]{example-image-a}
    \end{center}
    \caption{this is my caption}

\end{wrapfigure}

\section*{Study Site}
\lipsum

\end{document}

Answer 1

With real text before:

The next code has the same problem as your question's:

\documentclass[10pt]{article}
\usepackage{wrapfig}
\usepackage{graphicx}
\usepackage{lipsum}

\begin{document}
After using {wrapfigure} and choosing the number of lines to wrap, a new paragraph still behaves as 
if I told it to
continue wrapping. I'm sure that sounds confusing, here is an example. How can I fix my paragraphs to go 
back to normal after {wrapfigure}?

\begin{wrapfigure}[15]{l}{.5\textwidth} 
    \begin{center}
        \includegraphics[width=61mm]{example-image-a}
    \end{center}
    \caption{this is my caption}
\end{wrapfigure}



\section*{Study Site}
\lipsum

\end{document}

Output:

By removing the empty line before the wrapfigure, the problem is solved because our figure is inside the previous paragraph. (it will be moved to the next but it will not remain out of a paragraph that causes the specific peroblem)

Output: