Part of main text grabbed by watermark

Question

I am using the solution presented in Q/A 132582 to produce a transparent foreground watermark. With success most of the time. But on some rare occasions, a part of the main text is embedded into the watermark, as seen here

The text in black in the watermark should appear at the beginning of the first line of the next page instead. It is the title of a ntheorem theorem.

Thanks to Ulrike Fischer we now have a MWE :

\documentclass{article}
\usepackage{xcolor}
\usepackage[printwatermark]{xwatermark}
\newwatermark*[allpages,angle=45,scale=3,xpos=0,ypos=0]{CORRIGÉ}
\usepackage{lipsum,listings}
\usepackage{ntheorem}
\newtheorem{question}{Question}[section]
\begin{document}
\lipsum[1-4]
abc\\abc\\abc\\abc
\begin{lstlisting}
abc
abc
abc
abc
abc
\end{lstlisting}

\begin{question}blblbabc\end{question}

\end{document}

This a MWE in the sense that if you abstain from using ntheorem or replace the lstlisting with a verbatim, the problem disappears.

Answer 1

This is certainly not an answer but a workaround, which may work for you if you are willing to load tikz. (The other package I am loading, eso-pic, gets loaded by the xwatermark package, so this is not an additional package.)

\documentclass{article}
\usepackage{tikz}
\usepackage{eso-pic}
\usepackage{lipsum,listings}
\usepackage{ntheorem}
\AddToShipoutPictureBG{
\tikz[overlay]{\node[rotate=45,scale=6,text=gray!50] at (current page.center){CORRIG\'E};}}
\newtheorem{question}{Question}[section]
\begin{document}
\lipsum[1-4]
abc\\abc\\abc\\abc
\begin{lstlisting}
abc
abc
abc
abc
abc
\end{lstlisting}

\begin{question}blblbabc\end{question}

\end{document}