Seems like a bug?

Docs: https://docs.hise.dev/scripting/scripting-api/array/index.html#sort

const var n = [3, 1, 2];
const var s = ["b", "c", "a"];

Console.print(trace(n.sort()));        // ✅ [3, 1, 2] becomes [1, 2, 3]
Console.print(trace(s.sort()));        // ❌ stays ["b", "c", "a"]
Console.print(trace(s.sortNatural())); // ✅ properly sorted as ["a", "b", "c"]

sortNatural() is the function that works for sorting strings.