Read problem statements in a window
Click a problem title to read its statement, math, examples and constraints in a floating window, without leaving the list.

What changed
A problem statement opens only when you click its title, in a window that keeps its size while it loads. Math shows as proper formulas, and the window links to the original problem on its judge.
Codeforces doesn’t let Arise load its statements, so Codeforces rows open the same window with the problem’s rating and an Open on Codeforces link.