Le problème est la position de `\small` : \documentclass{article} % \usepackage{lua-visual-debug} \usepackage[paperheight=6.4in, paperwidth=4.8in, margin=.25in]{geometry} %\usepackage{fontspec} %\setmainfont{EBGaramond-Regular} \usepackage{fontspec} \setmainfont{EBGaramond-Regular} \usepackage{tabularx} \usepackage{multirow} \begin{document} \begin{center} \small \begin{tabularx}{1.15\paperwidth}{p{.50\paperwidth} p{2em} p{.50\paperwidth}} %\small \multicolumn{1}{c}{some text} & \multirow{5}{2em}{|| ||} & \multicolumn{1}{c}{some text} \\ & & \\ & & \\ & & \\ & & \\ \end{tabularx} \end{center} \normalsize \end{document}

\documentclass{article} % \usepackage{lua-visual-debug} \usepackage[paperheight=6.4in, paperwidth=4.8in, margin=.25in]{geometry} %\usepackage{fontspec} %\setmainfont{EBGaramond-Regular} \usepackage{tabularx} \usepackage{multirow} \begin{document} \begin{center} \small \begin{tabularx}{1.15\paperwidth}{p{.50\paperwidth} p{2em} p{.50\paperwidth}} %\small \multicolumn{1}{c}{some text} & \multirow{5}{2em}{|| ||} & \multicolumn{1}{c}{some text} \\ & & \\ & & \\ & & \\ & & \\ \end{tabularx} \end{center} \normalsize \end{document}