4

I have this two simple images:

\documentclass{report}
\usepackage{tikz}
\begin{document}
    \fbox{\tikz{% 
        \fill[red!20] (0,0) to[in=210,out=30] (10,0) -- (10,1) -- (0,1) -- cycle;
        }}

    \bigskip

    \fbox{\tikz{% 
        \fill[red!20] (0,0) -- (10,0) -- (10,1) -- (0,1) -- cycle;
        }}
\end{document}

And I am quite surprised about the bounding box of the first one:

Result with wildly different b-b

Is it possible to achieve (automatically) tighter bounding box when using to[in=..., out=...] construct?

2