stix2 not work with Russian language

Question

I am trying to use the stix2 package in together with the Russian language. But when I enable Russian language support, the font of the plain text becomes CM instead of STIX.

Work:

\documentclass{article}

\usepackage[T1, T2A]{fontenc}
\usepackage{babel}
\usepackage{stix2}

\begin{document}
text $math$
\end{document}

Not work:

\documentclass{article}

\usepackage[T1, T2A]{fontenc}
\usepackage[russian]{babel}
\usepackage{stix2}

\begin{document}
text $math$
\end{document}

If I add the OT2 encoding at the same time, the word text will turn into the word тешт, typed in STIX font:

\documentclass{article}

\usepackage[T1, T2A, OT2]{fontenc}
\usepackage[russian]{babel}
\usepackage{stix2}

\begin{document}
text $math$
\end{document}

Is it possible to use stix2 together with the Russian language and if so, how? All I could find on the internet is this answer, which suggests using a third-party font. I would like to do with the stix font.

Answer 1

The STIX2 fonts don't support the T2A encoding, so you want to replace the text font with one that does and is Times-compatible.

\documentclass{article}
\usepackage[T1, T2A]{fontenc}
\usepackage[russian]{babel}
\usepackage{stix2}
\usepackage{tempora}% replace the text font

\begin{document}

text $a+b=2$ русский язык

\end{document}