Exact equality operator (===) is not treated commutative

The following code shows a problem where IC is treating the exact equality operator as if it is not commutative:

@IsTest
private class TestTest {

    virtual class Foo {}
    class Bar extends Foo {}

    @IsTest
    static void test() {
        Foo f = new Foo();
        Bar b = new Bar();

        System.assertEquals(true, b === f);
        System.assertEquals(true, f === b);
    }
}

Line 12 is marked with the following error: Comparison Arguments must be compatible types: TestTest.Foo, TestTest.Bar

The code itself compiles without issues.

Use case: we are creating mocks/stubs for our classes. In many cases we are comparing for exact equality between a variable of the mock type and another with the base type. This works as expected, but is always marked as error in IC 2.

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