Draw tick marks on top of bars

Question

I have been trying to figure out how to draw on top of bars to put tick marks on each bar, but I can't seem to figure out how to draw on top of the bar. Here's the minimal example:

\documentclass{standalone}
\usepackage{pgfplots}

\definecolor{bluethree}{cmyk}{0.83,0.27,0,0.22}

\begin{document}
\begin{tikzpicture}
    \begin{axis}[width  = \textwidth,
    axis on top,
    ybar stacked,
    bar width=14pt,
    xticklabels = {A,B,C,D,E},
    xtick = {1,...,5},
    enlarge x limits=0.1,
    axis line style={-},
    ymin=-0,ymax=70,
    x=4cm,
    axis line style = thick,
    ytick align = outside
    ]

    \addplot[style={bluethree!90!black,fill=bluethree!80,mark=none}]
    coordinates {(1, 33.74) (2, 32.43) (3, 20.52) (4, 26.83) (5, 31.33)}; 

    \addplot[style={bluethree!90!black,fill=bluethree!40,mark=none}]
    coordinates {(1, 14.74) (2, 7.43) (3, 29.07) (4, 22.44) (5,13.60)}; 

    \draw[thick, black] (axis cs: 1,5) -- (axis cs: 0.8,5);

    \end{axis}
\end{tikzpicture}
\end{document}

If you see, the line I draw at the end with \draw[thick, black] (axis cs: 1,5) -- (axis cs: 0.8,5); draws the line starting at the left most of the bar, instead of right on the middle and above it. My end goal is to have something like this for each bar (i.e. divide each bar in equal parts, in this example, bar A has tick marks at 25, 50, and 75% of its height).

Answer 1

One possibility is to store the nodes on top of the bars using this answer, and to draw the annotations after \end{axis}.

\documentclass{standalone}
\usepackage{pgfplots}
\usetikzlibrary{decorations.pathreplacing,decorations.markings}
\definecolor{bluethree}{cmyk}{0.83,0.27,0,0.22}
\pgfplotsset{% from https://tex.stackexchange.com/a/287528/121799
    name nodes near coords/.style={
        every node near coord/.append style={
            name=#1-\coordindex,
            alias=#1-last,
        },
    },
    name nodes near coords/.default=coordnode
}
\tikzset{mymarks/.style={decorate,   decoration={markings,mark=at position .25 with {\draw[thick] (0pt,-4pt) --
   (0pt,4pt);},mark=at position .5 with {\draw[thick] (0pt,-4pt) -- (0pt,4pt);},
   mark=at position .75 with {\draw[thick] (0pt,-4pt) -- (0pt,4pt);}
   }}}
\begin{document}
\begin{tikzpicture}
    \begin{axis}[width  = \textwidth,
    axis on top,
    ybar stacked,
    bar width=14pt,
    xticklabels = {A,B,C,D,E},
    xtick = {1,...,5},
    enlarge x limits=0.1,
    axis line style={-},
    ymin=-0,ymax=70,
    x=4cm,
    axis line style = thick,
    ytick align = outside,
    nodes near coords={},
    nodes near coords align={anchor=south}
    ]
\addplot[style={bluethree!90!black,fill=bluethree!80,mark=none}]
coordinates {(1, 33.74) (2, 32.43) (3, 20.52) (4, 26.83) (5, 31.33)}; 

\addplot[name nodes near coords=myname,style={bluethree!90!black,fill=bluethree!40,mark=none}]
coordinates {(1, 14.74) (2, 7.43) (3, 29.07) (4, 22.44) (5,13.60)}; 
%\draw[thick, black] (axis cs: 1,5) -- (axis cs: 0.8,5);
\coordinate (O) at (axis cs:0,0);
\end{axis}
\foreach \i in {0,...,4}{
\draw[mymarks] (myname-\i.south east) -- (O-|myname-\i.south east);}

\end{tikzpicture}
\end{document}

It will be possible to refine this (here the number of annotations is hardcoded) if this turns out the direction you want to go .

Answer 2

This is because "stacked" plots are drawn in reverse order by default. The PGFPlots manual (v1.15) states in section 4.5.9 as description to the key reverse stacked plots=true|false

Configures the sequence in which stacked plots are drawn. This is more or less a technical detail which should not be changed in any normal case.
The motivation is as follows: suppose multiple \addplot commands are stacked on top of each other and they are processed in the order of appearance. Then, the second plot could easily draw its lines (or fill area) on top of the first one { hiding its marker or line completely. Therefor, pgfplots reverses the sequence of drawing commands.
This has the side-effect that any normal TikZ paths inside of an axis will also be processed in reverse sequence.

Thus, you could state reverse stacked plots=false in the axis options, but a better solution most likely is to move the \draw command(s) before the \addplot commands.

% used PGFPlots v1.15
\documentclass[border=5pt]{standalone}
\usepackage{pgfplots}
    \pgfplotsset{
        % use this `compat' level of higher so TikZ coordinates don't have to be
        % prefixed by `axis cs:'
        compat=1.11,
    }
    \definecolor{bluethree}{cmyk}{0.83,0.27,0,0.22}
\begin{document}
\begin{tikzpicture}
    \begin{axis}[
        axis on top,
        ybar stacked,
        bar width=14pt,
        xticklabels={A,B,C,D,E},
        xtick={1,...,5},
        enlarge x limits=0.1,
        ymin=-0,ymax=70,
        axis line style=thick,
        ytick align=outside,
    ]

        % moved this command *before* the `\addplot's
        % (if you use `\pgfplotbarwidth', i.e. a command storing a *length*,
        %  also the other coordinate has to be a length ...
        \draw [thick, black] (axis cs:1,5) -- +(\pgfplotbarwidth/2,0pt);
        %  ... otherwise both are interpreted as axis coordinates as in the
        %  following command)
        % \draw [thick, black] (axis cs:2,10) -- +(\pgfplotbarwidth/2,0);

        \addplot [bluethree!90!black,fill=bluethree!80]
            coordinates {(1, 33.74) (2, 32.43) (3, 20.52) (4, 26.83) (5, 31.33)};

        \addplot [bluethree!90!black,fill=bluethree!40]
            coordinates {(1, 14.74) (2, 7.43) (3, 29.07) (4, 22.44) (5,13.60)};

    \end{axis}
\end{tikzpicture}
\end{document}