XeLaTeX can't turn off small caps

Question

I found a weird issue when using the free typeface Fontin.

\documentclass{article} % Default font size and paper size

\usepackage{fontspec} % For loading fonts

\setmainfont{Fontin}

\begin{document}

Here is some text.

\textnormal{Here is some text.}

\textup{Here is some text.}

\textrm{Here is some text.}

\textsf{Here is some text.}

\textsl{Here is some text.}

\textsc{Here is some text.}

\uppercase{Here is some text.}

\lowercase{Here is some text.}

\textbf{Here is some text.}

\textmd{Here is some text.}

\end{document}

When I compile with XeLaTeX, most of the text comes out as small-caps:

If I use LuaLaTeX, however, everything is rendered as expected -- except for the small-caps line:

I have only encountered this issue with Fontin; other typefaces seem to work as they should. I'm using Arch Linux.

Answer 1

\documentclass{article} % Default font size and paper size
\usepackage{fontspec} % For loading fonts
\setmainfont[SmallCapsFont=Fontin]{Fontin-Regular}

\begin{document}
    Here is some text.\par
    \textnormal{Here is some text.} normal\par
    \textup{Here is some text.} up\par
    \textrm{Here is some text.} rm\par
    \textsf{Here is some text.} sf\par
    \textsl{Here is some text.} sl\par
    \textsc{Here is some text.} sc\par
    \uppercase{Here is some text.} uppercase\par
    \lowercase{Here is some text.} lowercase\par
    \textbf{Here is some text.} bf\par
    \textmd{Here is some text.} md
\end{document}

Answer 2

\documentclass{article}
\usepackage{fontspec}
\renewcommand{\familydefault}{\sfdefault}
\setmainfont{Fontin}

 \begin{document}
Here is some text.

\textnormal{Here is some text.}

\textup{Here is some text.}

\textrm{Here is some text.}

\textsf{Here is some text.}

\textsl{Here is some text.}

\textsc{Here is some text.}

\uppercase{Here is some text.}

\lowercase{Here is some text.}

\textbf{Here is some text.}

\textmd{Here is some text.}

\end{document}

\end{document}

Produces

https://lh3.googleusercontent.com/CYKXcobrm9ju7naSJ-TN2u7nm0r9Xl4MXscfbaqwonTyzHx43NLsXVLw2ovoF6OdSZzICraGVyS1-x9b4okyMERNGFZJgC71albWMNEWSWwj9sd0myp1uZRKgooGLayDc7u2p_MNLTndouW2sqi6B1Bu2frEd4BG32zxW1kMsZPlakHwJNQHkFo6aM5_3Q9noP50-R48WUlPTg0tzp4OAqqhba4TcobUNaZvcdEMeek9HaMtnxNhTVEnxWYLUh11T04_C0oQt9LhaptcjI1qh-9kQYDqb2mgt8v02TbXLbI3W6yzqLf_Wv1TYCBtVOq8hs9AnmwqkP-MfO44QsKVNjGdtzDRYqbCfKxXbk3mdehTuxs_GPMVrWshwJGKuseQpY1TOubbJA4yJ0bq9x3hFcF-zd66os5ByFtN2bCyO2YnBmQZZz5-dzyUiX_rd43lgKjh8UxsPlsvE8MjIHEU8yI7ug7jupBtSoFX0UEmKIOxHrfEFORSsIxXEdboP_IB3SCtXQyF_xxdn9JuCQMQCQSug1qPD24V4ckLxrrvstWSTGDaVi1JW-soYy5JqVXfds2c=w243-h305-no