.all.include doesn't work as expected

[JonnoFTW]

When using all and include

import {expect, use} from "chai";
use(require("chai-things"));

expect(["abc", "bcd"]).to.all.include("bc");

You get the error:

AssertionError: expected 'abc' to include 'bc'

Ideally this test should pass, unless I am misunderstanding something here..