I found a readability and UX issue with empty subscripts and superscript. When I copy-paste the LaTeX expression here: A_{}^{}A_{}A^{}AA_{n}^{a}A_{n}A^{a}A... This is the output I see on mathlive's ...

Winter, Klaus and Holtum, J. A. M. 2017. "Facultative crassulacean acid metabolism (CAM) in four small C(subscript)3 and C(subscript)4 leaf-succulents." Australian Journal of Botany, 65 103–108.

An Efficient Massively Parallel Constant-Factor Approximation Algorithm for the k-Means Problem in SODA 2026 by Vincent Cohen-Addad, Fabian Kuhn, Zahra Parsaeian Vincent: "The set of comments provided ...