Forest folder in forked edges tree spacing problem

Question

The expected behavior of the following code would be that nodes descending from a myFolder node are positioned below the parent node with some indentation.

As you can see from the image, however, it would seem that the direct children of the myFolder node are positioned so that their left side is aligned with the center of the parent node.

Is there any way to fix this?

I would also like to understand how to align nodes on the same level with different heights at the top and not at the center.

\usepackage[edges]{forest}
\usetikzlibrary{calc}
\usetikzlibrary{positioning}
\forestset{
  declare boolean={folderDescendants}{false},
  myFolder/.style={
    l sep = 0,
    for tree={
      grow'=0,
      folder,
      align=center,
      s sep'=1mm,
      minimum height=5mm,
    },
    folder indent'=5mm,
    for descendants={
      folderDescendants,
      inner xsep=2mm,
      inner ysep=0mm,
      edge path'/.expanded={
        ([xshift=\forestregister{folder indent}]!u.parent anchor) |- ([yshift=.6ex].base west)
      },
    },
  },
  myFork/.style={
    for tree={
      fit=band,
      rounded corners,
      ultra thick,
      font=\sffamily\bfseries\Large,
      inner xsep=5mm,
      inner ysep=5mm,
      edge+={ultra thick, rounded corners},
      align=center,
      l sep'=20mm,
      s sep'=7mm,
      fork sep'=8mm,
      align = center,
    },
    forked edges,
    before typesetting nodes={
      where folderDescendants={}{
        draw,
        minimum height=15mm,
        minimum width=20mm,
        anchor=center,
      },
    },
  },
}
\begin{document}
\begin{forest}
  myFork,
  [Root,calign=child, calign child=2
    [Lorem ipsum, myFolder
      [Lorem ipsum dolor sit amet
        [Lorem ipsum dolor sit amet]
        [Lorem ipsum dolor sit amet]
        [Lorem ipsum dolor sit amet]
      ]
      [Lorem ipsum dolor sit amet]
      [Lorem ipsum]
    ]
    [Lorem ipsum dolor sit amet
      [Lorem ipsum dolor sit amet]
      [Lorem ipsum\dolor sit amet]
      [Lorem ipsum dolor sit amet,myFolder
        [Lorem 4
          [Lorem ipsum dolor sit amet]
          [Lorem ipsum dolor sit amet]
          [Lorem ipsum dolor sit amet]
        ]
        [Lorem 5.1\Lorem 5.2\Lorem 5.3]
        [Lorem 6]
      ]
    ]
    [Lorem ipsum\dolor sit amet]
    [Lorem ipsum]
    [Lorem ipsum]
  ]
\end{forest}
\end{document}

The current situation

The desired result (in green and fuchsia I have highlighted the spaces that I would like to modify)

The desired result with possible alignment to the top of the nodes

Answer 1

I'm not entirely sure what you want. However, this at least aligns the tops of the drawn nodes and removes the additional indentation of the folder nodes.

Significant bits of your code appeared to be at odds with your desires. Removing those parts fixed some of the issues immediately. Don't just copy forest styles and then try to tweak them. If they don't do what you want, at least look to see if the default settings from the manual do. The inset of the directory-style nodes is in that category: by default, they aren't aligned with the centre of the parent in the first place.

The folder style is tricky and it is difficult to get it to behave as people want when the tree changes direction. I don't think it was really intended to be used this way ;). It would probably be better to use something else, but I don't have any improved styles to offer :(, so it is a question of hacking for particular cases.

\documentclass[border=9pt]{standalone}
\usepackage[edges]{forest}
\forestset{
  folders down/.style={
    for tree={
      grow'=0,
      folder,
      minimum height=5mm,
    },
    for current and siblings={anchor=north west, child anchor=north},
    for current and ancestors={

      minimum height=15mm,
      minimum width=20mm,
    },
    for ancestors={l sep'+=5pt},
    for descendants={
      draw=none,
      inner xsep=2mm,
      inner ysep=0mm,
    },
  },
  myFork/.style={
    for tree={
      fit=band,
      rounded corners,
      draw,
      ultra thick,
      font=\sffamily\bfseries\Large,
      inner xsep=5mm,
      inner ysep=5mm,
      outer ysep=0pt,
      edge+={ultra thick},% rounded corners}, replace if you like
      align=center,
    },
    forked edges,
  },
}
\begin{document}
\begin{forest}
  myFork,
  [Root,calign=child, calign child=2
    [Lorem ipsum, folders down
      [Lorem ipsum dolor sit amet
        [Lorem ipsum dolor sit amet]
        [Lorem ipsum dolor sit amet]
        [Lorem ipsum dolor sit amet]
      ]
      [Lorem ipsum dolor sit amet]
      [Lorem ipsum]
    ]
    [Lorem ipsum dolor sit amet
      [Lorem ipsum dolor sit amet]
      [Lorem ipsum\dolor sit amet, calign with current edge]
      [Lorem ipsum dolor sit amet, folders down
        [Lorem 4
          [Lorem ipsum dolor sit amet]
          [Lorem ipsum dolor sit amet]
          [Lorem ipsum dolor sit amet]
        ]
        [Lorem 5.1\Lorem 5.2\Lorem 5.3]
        [Lorem 6]
      ]
    ]
    [Lorem ipsum\dolor sit amet]
    [Lorem ipsum]
    [Lorem ipsum]
  ]
\end{forest}
\end{document}

I changed style names because I hardly ever use caps and I kept writing myfolder. Obviously, use whatever names you like. (I left myFork because I didn't have to retype it. So now the code style is inconsistent, to boot.)