Can not build Sphinx own PDF docs since 4.1.0 #9475
Description
Describe the bug
Sphinx own PDF document build fails:
LaTeX Warning: Command \TeX invalid in math mode on input line 22151.
! You can't use `\spacefactor' in math mode.
\@->\spacefactor
\@m {}
l.22151 ... that the system has a working \(\LaTeX
\) installation,
?
How to Reproduce
build Sphinx own docs
Sphinx version
4.1.0, 4.1.1