How to use bold option of V6.3 nicematrix?

I'd like to use the \RowStyle command by nicematrix, but I am having a problem with the new 6.3 version.

I used to use \RowStyle{\bfseries}, but now it seems the option has changed...

\documentclass{scrartcl}
\usepackage[svgnames]{xcolor}
\colorlet{Gray}{Lavender!80!gray}
\usepackage{nicematrix}
\usepackage{siunitx}
\usepackage{booktabs}
\begin{document}
\begin{table}[hbtp]
\centering
\caption{$d$-values of the reflex maxima of PD1 and PD2}
\label{tab:reflex-values}
\sisetup{table-format = 2.3}
%    \resizebox{\textwidth}{!}{
\begin{NiceTabular}{lS[table-auto-round]lS[table-auto-round]}[baseline=1.2]
\CodeBefore
\rowcolors{2}{Gray}{white}
\Body
\toprule
\RowStyle{\bfseries}
\Block[c]{1-2}{PD1} & & \Block[c]{1-2}{PD2} & \\
\midrule
$\varphi_1$ [\si{\degree}] & 8.8848 & $\varphi_1$ [\si{\degree}] & 7.7048 \\
$\vartheta_1$ [\si{\degree}] & 4.4424 & $\vartheta_1$ [\si{\degree}] & 3.8524 \\
$d_1$ [\si{\angstrom}] & 9.944887 & $d_1$ [\si{\angstrom}] &  11.465158 \\
$\varphi_2$ [\si{\degree}] & 28.1826 & $\varphi_2$ [\si{\degree}] & 9.1102 \\
$\vartheta_2$ [\si{\degree}] & 14.0913 & $\vartheta_2$ [\si{\degree}] & 4.5551 \\
$d_2$ [\si{\angstrom}] & 3.163863 & $d_2$ [\si{\angstrom}] & 9.699301 \\
$\varphi_3$ [\si{\degree}] & {--} & $\varphi_3$ [\si{\degree}] & 26.1225 \\
$\vartheta_3$ [\si{\degree}] & {--} & $\vartheta_3$ [\si{\degree}] & 13.06125 \\
$d_3$ [\si{\angstrom}] & {--} & $d_3$ [\si{\angstrom}] & 3.408518 \\
\bottomrule
\end{NiceTabular}
%    }
\end{table}
\end{document}


Does not work anymore. How do I use the new bold key? Can one change the bold key from boldmath to symbf from unicode-math?

EDIT: This somehow works as an MWE, but the same code (just different packages) in my main document causes some errors.

Package xcolor: Undefined color 'false'.

• You should provide a full MWE that you could compile, that is to say with the \documentclass, the \begin{document} and \end{document}, etc. Nov 8 '21 at 20:00
• It looks that there is a conflict of RowStyle with siunitx. Using the example on page #16 The command \Rowstyle and a MWE it works fine with version 6.3 but stops with many errors just by having \usepackage{siunitx} Nov 8 '21 at 20:28
• @Simon Dispa: Could you post another question with a MWE showing that behaviour? Thanks. Nov 9 '21 at 11:44
• @F. Pantigny I posted as an answer to keep the thread together. I will delete it later. Nov 9 '21 at 15:24
• @SimonDispa hope you aware that F. Pantigny is the author and the maintainer of nicematrix.sty Nov 9 '21 at 15:38

Use the latest version of siunitx (2021-11-03 v3.0.35) and load it before nicematrix
Thanks to F. Pantigny the author and the maintainer of nicematrix for his fast answer regarding the version of siunitx