Flipped box with tcolorbox

Question

In the second box I tried to imitate the layout of the first box but with the title down. Obviously, the result is not correct. In fact, the result that I foresee is in the third box; but I do not know how to implement it using the tcolorbox features.

\documentclass{beamer}
\usepackage{lmodern}

\usepackage{tikz}

\usepackage[most]{tcolorbox}
\tcbuselibrary{skins}
\usetikzlibrary{patterns}
\usetikzlibrary{decorations.shapes}
\usetikzlibrary{decorations.pathmorphing}

\tcbset{%
    myboxmainstyle/.style={%
        enhanced,
        segmentation style={solid,line width=1pt,decorate,decoration={zigzag}},
        center title,
        halign=flush center,
        boxrule=1pt,
        arc is angular, arc=3pt,
    }
}

\newtcolorbox{mybox}[2][]{%
    adjusted title={#2},
    myboxmainstyle,
    #1,
}

\usepackage{environ}

\newcommand\myrotateboxgrap[1]{\reflectbox{\rotatebox[origin=c]{180}{#1}}}
\newcommand\myrotateboxtikz[1]{\tikz[baseline=(box.north)]\node[yscale=-1,inner sep=0,outer sep=0](box){#1};}

\NewEnviron{myboxflipped}[2][]{%
    %\myrotateboxgrap{\begin{mybox}[#1]{\myrotateboxgrap{#2}}\myrotateboxgrap{\BODY}\end{mybox}}
    \myrotateboxtikz{\begin{mybox}[#1]{\myrotateboxtikz{#2}}\myrotateboxtikz{\BODY}\end{mybox}}
}

\begin{document}

\begin{frame}
    \begin{mybox}[]{Test}
        bla bla
    \end{mybox}
    \begin{mybox}[attach boxed title to bottom center={yshift=0.25mm+\tcboxedtitleheight/2,yshifttext=-2mm+\tcboxedtitleheight/2}]{Test}
        bla bla
    \end{mybox}
    \begin{myboxflipped}[colback=pink]{Test}
        bla bla
    \end{myboxflipped}
\end{frame}

\end{document}

Answer 1

The tcolorbox manual has an example flipbox which does precisely this flipping of the box and title (See page 161 as of version 4.15).

The crucial point is minipage boxed title* which expands the boxed title the width of outer tcolorbox.

\documentclass{beamer}
\usepackage{lmodern}

\usepackage{tikz}

\usepackage[most]{tcolorbox}
\tcbuselibrary{skins}
\usetikzlibrary{patterns}
\usetikzlibrary{decorations.shapes}
\usetikzlibrary{decorations.pathmorphing}

\tcbset{%
    myboxmainstyle/.style={%
      enhanced,
      segmentation style={solid,line width=1pt,decorate,decoration={zigzag}},
      center title,
      halign=flush center,
      boxrule=1pt,
      arc is angular, arc=3pt,
    }
}


\newtcolorbox{mybox}[2][]{
  enhanced,
  sharp corners=south,
  myboxmainstyle,
  attach boxed title to bottom center={yshift=0.5mm},
  minipage boxed title*,
  boxed title style={enhanced,
    size=normal,
    top=0pt,
    bottom=0pt,
    %interior hidden,
    sharp corners=north,
    boxrule=1pt,
    colback=red,
    arc is angular, arc=3pt},
  title={#2},#1
}



\begin{document}

\begin{frame}
    \begin{mybox}[]{Test}
        bla bla
    \end{mybox}
    \begin{mybox}[colback={yellow},coltitle=black,colbacktitle=red]{Another Test}
        bla bla
    \end{mybox}

\end{frame}

\end{document}

Edit

\documentclass{beamer}
\usepackage{lmodern}

\usepackage{tikz}

\usepackage[most]{tcolorbox}
\tcbuselibrary{skins}
\usetikzlibrary{patterns}
\usetikzlibrary{decorations.shapes}
\usetikzlibrary{decorations.pathmorphing}

\tcbset{%
    myboxmainstyle/.style={%
      enhanced,
      segmentation style={solid,line width=1pt,decorate,decoration={zigzag}},
      center title,
      halign=flush center,
      boxrule=1pt,
      arc is angular, arc=3pt,
    }
}


\newtcolorbox{mybox}[2][]{
  enhanced,
  sharp corners=south,
  myboxmainstyle,
  attach boxed title to bottom center={yshift=0.5mm},
  minipage boxed title*,
  boxed title style={enhanced,
    size=normal,
    top=0pt,
    bottom=0pt,
    center title,
    sharp corners=north,
    boxrule=1pt,
    arc is angular, arc=3pt},
  title={{\centering #2}},#1
}



\begin{document}

\begin{frame}
    \begin{mybox}[]{Test}
        bla bla
    \end{mybox}
    \begin{mybox}[colback={yellow},coltitle=black,colbacktitle=red]{Another Test}
        bla bla
    \end{mybox}

\end{frame}

\end{document}