momentum arrow tips change size with line width

[mreininghaus]

When I draw a diagram with specific line widths for the edges and a momentum arrow alongside, I notice that the size of the arrow tip increases together with that line width, as shown in the example below. I guess this behaviour is not intended, is it?

\documentclass[tikz]{standalone}
\usepackage[compat=1.1.0]{tikz-feynman}

\begin{document}
\begin{tikzpicture}
\begin{feynman}
    \diagram {
    f1 -- [fermion, momentum'=$p_1$, ultra thin] v1;
    f2 -- [anti fermion, momentum=$p_2$, ultra thick] v1;
    p1 -- [photon, momentum=$p_3$, line width=3pt] v1;
    };
\end{feynman}
\end{tikzpicture}
\end{document}

[JP-Ellis]

This is a scenario which I had not envisaged. I'm not quite sure why it is happening, but it is indeed unintended. I'll have a look at it once I have some more time.