我从 TeX Live 2017 升级到 2018（在 Mac 上），然后发现有些奇怪（？）。之前，以下显示空格增加的行，现在似乎被忽略了，行为就像只使用了一样。但是，如果我省略选项，\\那就没问题了。知道为什么/会发生什么吗？tablexcolor
\documentclass{scrartcl}
\usepackage[table]{xcolor}
\usepackage{tabularx}
\begin{document}
\begin{tabular}{c}
1\\[2mm]
2\\[4mm]
3\\[8mm]
4\\[16mm]
5\\
\end{tabular}
\end{document}
更新
使用序言中的pdflatex MWE.tex和进行编译\listfiles，这是我得到的输出：
This is pdfTeX, Version 3.14159265-2.6-1.40.19 (TeX Live 2018) (preloaded format=pdflatex)
restricted \write18 enabled.
entering extended mode
(./MWE.tex
LaTeX2e <2018-04-01> patch level 2
Babel <3.18> and hyphenation patterns for 84 language(s) loaded.
(/usr/local/texlive/2018/texmf-dist/tex/latex/base/article.cls
Document Class: article 2014/09/29 v1.4h Standard LaTeX document class
(/usr/local/texlive/2018/texmf-dist/tex/latex/base/size10.clo))
(/usr/local/texlive/2018/texmf-dist/tex/latex/xcolor/xcolor.sty
(/usr/local/texlive/2018/texmf-dist/tex/latex/graphics-cfg/color.cfg)
(/usr/local/texlive/2018/texmf-dist/tex/latex/graphics-def/pdftex.def)
(/usr/local/texlive/2018/texmf-dist/tex/latex/colortbl/colortbl.sty
(/usr/local/texlive/2018/texmf-dist/tex/latex/tools/array.sty)))
(/usr/local/texlive/2018/texmf-dist/tex/latex/tools/tabularx.sty)
No file MWE.aux.
(/usr/local/texlive/2018/texmf-dist/tex/context/base/mkii/supp-pdf.mkii
[Loading MPS to PDF converter (version 2006.09.02).]
) [1{/usr/local/texlive/2018/texmf-var/fonts/map/pdftex/updmap/pdftex.map}]
(./MWE.aux)
*File List*
article.cls 2014/09/29 v1.4h Standard LaTeX document class
size10.clo 2014/09/29 v1.4h Standard LaTeX file (size option)
xcolor.sty 2016/05/11 v2.12 LaTeX color extensions (UK)
color.cfg 2016/01/02 v1.6 sample color configuration
pdftex.def 2018/01/08 v1.0l Graphics/color driver for pdftex
colortbl.sty 2012/02/13 v1.0a Color table columns (DPC)
array.sty 2018/04/07 v2.4g Tabular extension package (FMi)
tabularx.sty 2016/02/03 v2.11b `tabularx' package (DPC)
supp-pdf.mkii
***********
)</usr/local/texlive/2018/texmf-dist/fonts/type1/public/amsfonts/cm/cmr10.pfb>
Output written on MWE.pdf (1 page, 9681 bytes).
Transcript written on MWE.log.