如果我编译这个代码在我的系统（Windows 10、Miktex 2.9、Tikz 3.01a）中，一切都很好，只是旋转后的公式向右移动，使得底部公式跨在框的右侧。如果我将度量（文本宽度）从 5.5 更改为 5，则输出结果应如预期（或非常接近）；似乎这种事情从未发生过；这相当令人不安；对此有已知的解释吗？关于这种差异，目前的知识是什么？
代码重复如下。
\documentclass{article}
\usepackage[landscape,margin=0cm]{geometry}
\usepackage{mathtools}
\usepackage{amssymb,amsthm}
\usepackage{multicol}
\usepackage[most]{tcolorbox}
\usepackage{tikz}
\usetikzlibrary{positioning}
\newtcolorbox{mybox}[2][]{width=\linewidth,fontupper=\scriptsize,
fonttitle=\bfseries\sffamily\scriptsize, colbacktitle=black, enhanced,
attach boxed title to top left={yshift=-2mm,xshift=3mm},
boxed title style={sharp corners},top=2mm, bottom=1mm, left=1.5mm,
right=1.5mm, title=#2, colback=white}
\pagestyle{empty}
\parindent=0pt
\parskip=2pt
\begin{document}
\begin{multicols*}{3}
\begin{mybox}{Single Side-Band (SSB)}
\begin{tikzpicture}[node distance=2mm, inner sep=0pt, outer sep=0pt]
\node (image) {\includegraphics[width=3.4cm]{example-image-a}};
\node (phase) [align=center, text width=5.5cm, right=of image.north east,
anchor=north west] {
Phase Shifting method: \\
$\phi_{SSB} = A_{c}[m(t)\cos 2\pi f_{c}t\mp\hat{m}(t)\sin2\pi f_{c}t]$
};
\node [below=of image.south west, anchor=north west,text width=7.5cm] {
Demod of SSB-SC: \\
\quad$=A_{c}m(t)+\underbrace{A_{c}[m(t)\cos 4\pi f_{c}t\mp \hat{m}(t)\sin4\pi f_{c}t]}_{\text{Suppressed by LPF}}$};
\node [rotate=90, text width=8cm, below=of phase.south east, anchor=south
east, font=\tiny] {
\begin{align*}
\phi_{SSB} = & A_{c}[m(t)\cos 2\pi f_{c}t\mp\hat{m}(t)\sin2\pi f_{c}t] + A\cos2\pi f_{c}t, \\
= & E(t)\cos(2\pi f_{c}t + \theta(t)) \\
\text{where}\quad E(t) = & A_{c}\sqrt{[A+m(t)]^{2} + [\hat{m}(t)]^{2}} \text{ and } \theta(t)=-\tan^{-1}\left\{ \frac{\hat{m}(t)}{A + m(t)} \right\}
\end{align*}
};
\end{tikzpicture}
\end{mybox}
\end{multicols*}
\end{document}