[TeX input] \class is lost during input [was "\class" being ignored in "\left[\class{test}{\sin(x)}\right]"]
Created by: TomasRiker
In \left[\class{test}{\sin(x)}\right], the \class is ignored.
When replacing \sin(x) with e.g. x^2, it works. It also works when removing the \left[ and \right] around the expression.
See this screenshot (the test class is just defined to be color: red):
