Intellisense is not showing automatic imports

[alexrock]

TypeScript Version:
2.6.2 - ok
2.7.0-dev.20171116 - ok
2.7.0-dev.20171117 - fail
next - fail

Code

package.json:

{
    "name": "test",
    "version": "0.0.0",
    "dependencies": {
        "babylonjs": "^3.2.0-alpha0",
        "babylonjs-gui": "^3.2.0-alpha0"
    }
}

tsconfig.json:

{
    "compilerOptions": {
        "target": "es5",
        "module": "es2015",
        "types": [
            "babylonjs",
            "babylonjs-gui"
        ]
    }
}

index.ts:

let button = new Button // Button is missing in completion list

Expected behavior:
Intellisense shows automatic imports
Actual behavior:
Doesn't show

A simpler example:

b.ts

declare namespace N {
    export const xxx = 0;
}

export = N;

a.ts

xx/**/

We don't give the completion for an export inside a namespace, although the import fix still works.