Marking decoration at position 1 is dropped when applied to bend to-path

[muzimuzhi]

Brief outline of the bug

From https://tex.stackexchange.com/q/647904

When a marking decoration mark=at position 1 with {...} is applied to a straight line or dummy to-path, it works fine. But when the path is a bend to-path, like (0,0) to[in=30] (2,0), then the marking is not drawn. Meanwhile, mark=at position .99 with {...} survives.

Minimal working example (MWE)

\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{decorations.markings}

\begin{document}
\begin{tikzpicture}[
  decoration={
    markings,
    mark=at position .99 with {\draw[red] (0,0) circle (3pt); },
    mark=at position 1 with { \draw[blue] (0,0) circle (5pt); }
  }
]
  \draw [postaction={decorate}] (0,0) to (2,0);
  \draw [yshift=-1cm, postaction={decorate}] (0,0) to[in=30] (2,0);
\end{tikzpicture}
\end{document}