Language Service doesn't show object property name suggestions for type with computed property names

[Voronar]

TypeScript Version: 2.9.x

Search Terms:
Language Service API, Autocomplete

Code

// 2.9.x - NOT WORKING autocomplete for enumKeyObject
// 2.8.x - WORKING BOTH

enum Keys {
    First = 'first',
    Second = 'second',
    Third = 'third',
}

type EnumKeyObject = {
    [Keys.First]: {
        [Keys.Second]: {
            [Keys.Third]: boolean;
        }
    }
}

type StringKeyObject = {
    first: {
        second: {
            third: boolean;
        }
    }
}

const enumKeyObject: EnumKeyObject = {
    first: {
        second: {
            third: true,
        }
    }
}
const stringKeyObject: StringKeyObject = {
    first: {
        second: {
            third: true,
        }
    }
}

enumKeyObject // autocomplete via '.' press NOT WORKING
stringKeyObject // autocomplete via '.' press WORKING

Expected behavior:
Autocomplete for computed name properties (enumKeyObject variable).

Actual behavior:
Autocomplete for computed name properties not working like in earlier version of TypeScript (ex. 2.8.1).

Playground Link:
TypeScript 2.8 playground

TypeScript 2.9 playground

[DanielRosenwasser]

Actually, you do get completion for enumKeyObject in our nightly for Keys, but it really sounds like it should be Keys.First, Keys.Second, etc.

As mentioned by Ron Buckton (@rbuckton) in #16864 we don't provide completions for qualified names. Should we change that for this?