Version Used: 31819.334.d17.0

Steps to Reproduce:

1. Create new console app
2. Edit .csproj file to target multiple frameworks, e.g.

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>net6.0</TargetFramework>
  </PropertyGroup>

</Project>

3. Launch RoslynDev experimental instance using the Roslyn repo's main-vs-deps branch. Attempt to open any file in the project.

Expected Behavior: VS doesn't freeze

Actual Behavior: VS completely freezes up: