CarLaTeX
In the following code, why `matrAquater` and `matrBquater` don't have the delimiter vertically positioned as in the other matrices?
```
\documentclass{article}
\usepackage{amsmath}
\usepackage{tikz}
\usetikzlibrary{matrix, positioning}
\tikzset{
mymatr/.style={
matrix of math nodes,
nodes in empty cells,
inner xsep=-6pt,
inner ysep=0pt,
nodes={
inner xsep=5pt,
inner ysep=3pt
},
left delimiter={[},
right delimiter={]}
}
}
\begin{document}
\[
\begin{tikzpicture}
\matrix[mymatr] (matrA) {
1 & 2 & 3 \\
4 & 5 & 6 \\
7 & 8 & 9 \\};
\end{tikzpicture}
\begin{tikzpicture}
\matrix[mymatr] (matrAbis) {
1 & 2 & -3 \\
4 & 5 & 6 \\
7 & 8 & -9 \\};
\end{tikzpicture}
\begin{tikzpicture}
\matrix[mymatr] (matrAter) {
1 & 2 & -3 \\
-4 & 5 & 6 \\
7 & 8 & 9 \\};
\end{tikzpicture}
\begin{tikzpicture}
\matrix[mymatr] (matrAquater) {
1 & 2 & -3 \\
-4 & 5 & 6 \\
7 & 8 & -9 \\};
\end{tikzpicture}
\]
\[
\begin{tikzpicture}
\matrix[mymatr] (matrB) {
1 & 2 & 3 \\
4 & 5 & 6 \\};
\end{tikzpicture}
\begin{tikzpicture}
\matrix[mymatr] (matrBbis) {
1 & 2 & -3 \\
4 & 5 & 6 \\};
\end{tikzpicture}
\begin{tikzpicture}
\matrix[mymatr] (matrBter) {
1 & 2 & 3 \\
-4 & 5 & 6 \\};
\end{tikzpicture}
\begin{tikzpicture}
\matrix[mymatr] (matrBquater) {
1 & 2 & -3 \\
-4 & 5 & 6 \\};
\end{tikzpicture}
\]
\end{document}
```
