Hyperref not working with custom figure environment spanning multiple pages

Question

I would like to use the hyperref package to highlight the citations and urls in blue in the text (\usepackage[colorlinks,citecolor=blue,urlcolor=blue]{hyperref}), as well as later using hyperref to link Figure citations to the corresponding figure page.

However, I use a custom figure environment to handle captions spanning multiple pages in case of large figures/large captions.

When I set the hyperref package, the captions that spanned multiple pages raise a warning

Package caption warning: The option 'hypcap=true' will be ignored for this particular \caption.

How can I concile large caption spanning multiple pages with package hyperref?

Here is my code:

\documentclass[12pts,openright,twoside]{report}
\usepackage[a4paper,width=150mm,top=25mm,bottom=25mm, bindingoffset=6mm]{geometry}
\usepackage[font={small,sf}, singlelinecheck=false]{caption}
\usepackage{graphicx}
\graphicspath{{./fig/}}
\usepackage{chngcntr}
\counterwithout{figure}{chapter}
\counterwithout{table}{chapter}
\usepackage{natbib}
\bibliographystyle{apa}
\usepackage[nottoc,notlot,notlof]{tocbibind}
\usepackage[colorlinks,citecolor=blue,urlcolor=blue]{hyperref}

\begin{document}

\begin{center}
\includegraphics[width=\textwidth]{fig/chap2-workflow.pdf}
\bigskip
\setbox0\vbox{\makeatletter
\let\caption@rule\relax
\captionof{figure}[My Figure Title.]{Very very large caption}
\global\skip1\lastskip\unskip
\global\setbox1\lastbox
}
\unvbox0
\setbox0\hbox{\unhbox1\unskip\unskip\unpenalty
\global\setbox1\lastbox}
\unvbox1
\vskip\skip1
\label{workflow1}
\end{center}

\end{document}

Answer 1

The warning continues in the log with

See the caption package documentation for explanation.

And if search there for hypcap you will end in the section 6.5 hyperref which describes your options. One for example is to use \captionsetup and \caption instead of \captionof outside of a real float environment:

\documentclass[12pt,openright,twoside]{report}
\usepackage[font={small,sf}, singlelinecheck=false]{caption}
\usepackage{graphicx}
\usepackage[colorlinks,citecolor=blue,urlcolor=blue]{hyperref}

\begin{document}

\begin{center}
\captionsetup{type=figure}
\includegraphics[width=\textwidth]{example-image}
\caption[My Figure Title.]{Very very large caption}
\label{workflow1}
\end{center}

\end{document}