TeXstudio has highlighted this for some time. same problem indicates it in the commands:
\tikzmarknode{}, \eqdescbox, \dimexpr
I have no problems in compiling the pdf file, I only see these things highlighted. I did an update of TexLive the other day but I still have this.
\documentclass[a4paper]{article}
\usepackage[T1]{fontenc}
\usepackage[italian]{babel}
\usepackage{amsmath}
\usepackage{graphicx,wrapfig}
\usepackage{mwe}
\newcommand*{\Fra}[2]{\frac{#1}{#2}}
\newcommand{\ccdot}{\,\mathrm{\!\cdot\!}}
\graphicspath{ {./img/} }
\begin{document}
\begin{wrapfigure}[10]{l}{3.0cm}
\vspace{-10pt}
\includegraphics[width=2.5cm]{particella1}
\label{fig:partstab}
\end{wrapfigure}
\end{document}

\colon. – campa Mar 06 '19 at 10:20You can also switch off syntax checking at Configure ... -> Editor -> Inline Checking -> Syntax.
– Antonio Mar 06 '19 at 10:34