Loss of type hints inside Layer.effect implementation

import { Effect, Context, Layer } from "effect";

export type User = {
  readonly name: string;
  readonly tel: number;
};
export type Shape = {
  readonly id: RegExp;
  readonly fn: () => Effect.Effect<User, Error, never>;
};
export class Module extends Context.Tag("Module")<Module, Shape>() {}
export default Layer.effect(
  Module,
  Effect.gen(function* () {
    return {
      id: /abc/,
      fn: Effect.fn(() => {
        return Effect.gen(function* () {
          return {
            name: "",
            tel: 123,
            // <- no type hint
          };
        });
      }),
    };
  })
);
export const fn: () => Effect.Effect<User, Error, never> = () =>
  Effect.gen(function* () {
    return {
      name: "",
      tel: 123,
      // <- has type hint
    };
  });