# Extra spaces when mixing beamercolorbox and tikzpicture

I am trying to create custom beamer blocks for a template using a tikzpicture for the title of the block and a beamercolorbox for the body.

Here is a MCVE:

\documentclass[t]{beamer}

\usepackage{tikz}
\usepackage{calc}

\setbeamercolor{block body}{fg = black, bg=blue!10}
\setbeamertemplate{block begin}{%
\tikz\node[text width=\textwidth{} - .4cm, inner sep=.2cm, fill=blue]{
\color{white}\insertblocktitle};
\begin{beamercolorbox}[leftskip=.2cm, rightskip=.2cm, dp=1ex, vmode]{block body}%
\vspace*{0.15cm}
}

\setbeamertemplate{block end}{%
\end{beamercolorbox}
}

\begin{document}

\begin{frame}
\begin{block}{Default}
Content.
\end{block}

Some text after\ldots{}
\end{frame}

\end{document}


I have two problems with the above code:

1. There is a small space between the tikzpicture and the beamercolorbox that I would like to get rid of... I could use a negative vspace, but not knowing where the space comes from, I do not want to put a random value.

2. Combining the tikzpicture with the beamercolorbox creates extra space below the block... Removing the tikzpicture or the beamercolorbox fix the issue, but I need both.

Here is the output I get:

I found out how to fix both issues with a simple change right after posting this... You need to separate the tikzpicture and the beamercolorbox into two latex "paragraph" and use nointerlineskip:
}; % End of the tikz picture