I could be wrong, but I think this is a remark-related issue. See the attached sandbox, which reproduces the issue. On the first slide, you can see that the equation is formatted correctly. However, when I add too many multiple-subscript items such as the second slide, it seems like remark has issues handling this situation. The LaTeX code is valid.
I could be wrong, but I think this is a remark-related issue. See the attached sandbox, which reproduces the issue. On the first slide, you can see that the equation is formatted correctly. However, when I add too many multiple-subscript items such as the second slide, it seems like remark has issues handling this situation. The LaTeX code is valid.