Local tikz does not understand opacity

[Red_Herring]

In addition to other tikz commands local implementation of tikz does not understand opacity

[math]$\begin{tikzpicture}[scale=.3]
\fill[red!20,opacity=.5] (-4,-2) rectangle (4,2);
\fill[blue!20,opacity=.5] (-2,-4) rectangle (2,4);
\end{tikzpicture}$[/math]

$\begin{tikzpicture}[scale=.3] \fill[red!20,opacity=.5] (-4,-2) rectangle (4,2); \fill[blue!20,opacity=.5] (-2,-4) rectangle (2,4); \end{tikzpicture}$

[Red_Herring]

Red_Herring в сообщении #840001 писал(а):

In addition to other tikz commands local implementation of tikz does not understand opacity

А должно быть так: