No member completion in particular place in core MVC template

```fsharp
namespace WebApplication1

open System
open System.Collections.Generic
open System.IO
open System.Linq
open System.Threading.Tasks
open Microsoft.AspNetCore
open Microsoft.AspNetCore.Hosting
open Microsoft.Extensions.Configuration
open Microsoft.Extensions.Logging

module Program =
let exitCode = 0

let BuildWebHost args =
WebHost
.CreateDefaultBuilder(args)
.UseStartup()
.Build()

[]
let main args =
BuildWebHost(args).Run()

exitCode
```
Repro solution from template: [WebApplication1.zip](https://github.com/Microsoft/visualfsharp/files/1545698/WebApplication1.zip)