For the last couple of years, LaTeX code typed between \( and \) would render as an equation once a Canvas page was saved. This was not working for me today. Typing, say, \( k^2 \) just produced "\(" rather than the desired k with an exponent 2 on it. I see that I can now enter LaTeX code directly in the equation editor without having to click to switch to "Advanced." But the great thing about the \( and \) was that I could just type up a long page on Canvas with lots of equations and not have to spend a bunch of time repeatedly clicking into the equation editor and then clicking save.