"dotnet run" command fails if path has spaces

[GabrielBB]

Describe the bug

"dotnet run" command does not work. It says "but dotnet-C:\Users\Gabriel does not exist" when my windows user is "C:\Users\Gabriel Brito...". It looks like the problem is the space in the user name.

To Reproduce

Steps to reproduce the behavior:

1. Windows account with spaces in the name. For example: "C:\Users\Gabriel Brito..."
2. Using ASP.NET Core 'SDK 3.0.100-preview4-011223'
3. Run these commands:

dotnet new -i Microsoft.AspNetCore.Blazor.Templates::3.0.0-preview4-19216-03
dotnet new blazor -o WebApplication1
cd WebApplication1
dotnet run

4. See error in Screenshots

Expected behavior

Application should be deployed on 5001. See: Get started with Blazor

Screenshots

Additional context

I have (not because i want to) Windows 8.1. Here is "dotnet --info" output:

[pranavkm]

Dup of #9597. The issue's been fixed in the preview5 release. For preview4, #9597 (comment) has workarounds.

[GabrielBB]

@pranavkm Do you know when preview5 will be available?