### Mathjax is incorrectly rendered

I noticed that MathJax is incorrectly rendered. Here https://www.emathhelp.net/calculators/calculus-2/integral-calculator/?f=xsinx&var=&steps=on under “the integral of the cosine is …” only integral of cosine on left-hand-side and sine on the right-hand side should be red, not equal sign and -xcos(x). However, when I click “show math as tex commands”, I get – x \cos{\left(x \right)} + \color{red}{\int{\cos{\left(x \right)}…

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