Wrapfig MWE giving different results

Question

I compiled this answer and got a very different result, as shown below.

There's no compilation error, with both TeXstudio and TeXworks, just a bunch of warnings about fonts:

/usr/bin/pdflatex (file /usr/share/texlive/texmf-var/fonts/map/pdftex/updmap/pdftex.map): fontmap entry for `pagd8y' already exists, duplicates ignored

I'm on Fedora workstation and use the package manager dnf install texlive-* where * is the package name.

I do use wrapfig in other documents with tikzpicture and it works as expected.

Am I missing a package?

EDIT : On Overleaf, only the 2nd figure isn't wrapped around and the issue is solved by @DavidCarlisle answer.

EDIT 2 : the problem comes from lipsum package (version 2021-03-03 v2.3). Replacing lipsum paragraphs with text solves the issue. See the comment thread for details. Thanks to @DavidCarlisle.

Answer 1

This is a change to the lipsum package, not adding so many \par add a blank line before the \endgroup after the second example, so wrapfig is seen before the paragraph ends.

\documentclass{article}
\usepackage{graphicx,lipsum,wrapfig}% http://ctan.org/pkg/{graphicx,lipsum,wrapfig}
\begin{document}
% Default settings
\begin{wrapfigure}{r}{0.5\textwidth}
  \centering\includegraphics[width=\linewidth]{example-image-a}
  \caption{Basic layout}
\end{wrapfigure}
\lipsum[1]
% Adjusted settings
\begingroup
\setlength{\intextsep}{0pt}%
\setlength{\columnsep}{0pt}%
\begin{wrapfigure}{r}{0.5\textwidth}
  \centering\includegraphics[width=\linewidth]{example-image-a}
  \caption{Basic layout}
\end{wrapfigure}
\lipsum[1]
\endgroup
\end{document}