Hello,
I am ashamed to ask for assistance, but I am stuck with the issue and it most likely would not qualify as a fully-developed question to create an inquiry about on StackExchange by going through the usual procedure (for it seems rather trivial).
I can't figure out why alignment is off; the two expressions have to be exactly aligned by the "sgn" operator:
\documentclass[margin=0.5in,preview]{standalone}
\usepackage{amsmath,fontspec}
\setmainfont{Cascadia Code}
\begin{document}
\noindent{}test\\%