How to fix hypertargets directing links to the line after the target? It looks like a bug

Question

If the hypertarget is in a text-mode location, links to it work normally (they show the target line at the top of the page). However, if the hypertarget is in math mode (of any kind: in-line or in display-math or in equation arrays), then it will direct to the line after the target.

MWE

\documentclass{minimal}
\usepackage{amsmath}
\usepackage{hyperref}

\begin{document}
\hypertarget{test1}{target1 in text mode}

Filler text.

$3 + 4 = 7 \hypertarget{test2}{}$ More filler text.

Link 2 actually directs to this line, rather than the above line, where we would expect it to do the latter.

\begin{eqnarray}
x * y = z \hypertarget{test3}{} \\
a + b = c % Link 3 actually directs to this line, rather than the above line, where we would expect it to do the latter. \\
\end{eqnarray}

\hyperlink{test1}{Clicking on this link shows target1 at the top of the page, as expected.}

\hyperlink{test2}{Link 2.}

\hyperlink{test3}{Link 3.}

\end{document}

This seems like a bug to me, but is there a better way to do this?

Answer 1

This is what you can do:

\documentclass{minimal}
\usepackage{amsmath}
\usepackage{hyperref}

\makeatletter
 \newcommand{\linkdest}[1]{\Hy@raisedlink{\hypertarget{#1}{}}}
\makeatother

\begin{document}
\linkdest{test1}target1 in text mode.

Filler text.

$3 + 4 = 7 \linkdest{test2}{}$ More filler text.

Link 2 actually directs to this line, rather than the above line, where we would expect it to do the latter.

\begin{eqnarray}
x * y = z \linkdest{test3}{} \\
a + b = c % Link 3 actually directs to this line, rather than the above line, where we would expect it to do the latter. \\
\end{eqnarray}

\hyperlink{test1}{Clicking on this link shows target1 at the top of the page, as expected.}

\hyperlink{test2}{Link 2.}

\hyperlink{test3}{Link 3.}

\end{document}