Not working anymore on C# Shared Projects (since VS 15.8.1)

[JCKodel]

Installed product versions

• Visual Studio: 2017 Enterprise 15.8.1
• This extension: 2.6.84

Description

Used to work just fine (after a pull request I sent some time ago). Since last VS update, does nothing (not even an alert or an error message in Output panel).

Steps to recreate

1. Create a C# Shared Project
2. Create a HTML file with .vue extension
3. Create a JavaScript file with .js extension
4. Press Ctrl+Shift+N to nest .js file in .vue file

Current behavior

Nothing happens.

Expected behavior

The .js file be nested underneath the .vue file

[tom-englert]

Probably related to this: dotnet/project-system#1870