# What's wrong with arev's subscript placement?

Short story: why does LaTeX's default math font manage to align the two v subscripts in columns 3 and 4, while the arev math font, shown in the second line, produce separate vertical positions for each of the three v subscripts, dependening on the existence and size of the superscript?

Ok, my real question probably is: How can I achieve "consistent" vertical positioning of subscripts when using the arev math font? I know of manual \phantom-hackery, but I would prefer an automatic (as in preamble-only) solution because my document is rather big.

\documentclass{article}
\usepackage{arev} % comment out for default font
\usepackage{amsmath}
\begin{document}
$A$, $A_v$, $A^\text{p}_{v}$, $A^\text{s}_{v}$
\end{document}


\end{document}