TypeScript re-export bug?

f.ts

export function f() {}

m1.ts

import { f } from "./f";
export { f };

m2.ts

export { f } from "./f";

m3.ts

export * from "./f";

main.ts

import assert from "assert";
import * as m1 from "./m1";
import * as m2 from "./m2";
import * as m3 from "./m3";

assert(Object.getOwnPropertyDescriptor(m1, "f")?.configurable === true);
assert(Object.getOwnPropertyDescriptor(m2, "f")?.configurable === false);
assert(Object.getOwnPropertyDescriptor(m3, "f")?.configurable === false);