Autocompletion in Classes when Implementing an Interface after Initial Fields

[hediet]

TypeScript Version: 3.3.1

Search Terms: Refactoring, Interface Implementation Autocompletion

Code

interface X {
    bla: string;
}
class Y implements X {
    // autocomplete here (1)
	private readonly blub = "";
    // autocomplete here (2)
}

Expected behavior:
When autocompleting at 1 in vscode, is suggests the member foo.
When autocompleting at 2 in vscode, is suggests the member foo.

Actual behavior:
When autocompleting at 1 in vscode, is suggests the member foo.
When autocompleting at 2 in vscode, is suggests nothing.

Playground link

It works however, when blub is not private.

[RyanCavanaugh]

This should be a fairly easy fix

[Kingwl]

Related: #30536?

[DanielRosenwasser]

Thanks @fuafa!