I can't tell if this is a spec bug or feature request. But this came up just now on ES Discuss, and it seems incredibly odd that [[Set]] doesn't seem to take into account some properties on non-frozen objects are inherited from frozen ones. Is there a reason it's checking the frozenness of the inherited object, when it's only the base object that such a property would be set if not frozen?

// Adapted example
const proto = {foo: "foo", bar: "bar"}
const o = Object.create(proto)

o.foo = 1 // works
Object.freeze(proto)
o.bar = 2 // fails?