This has two ramifications:

• A path based on a PS drive isn't supported.

  • A note re a possible fix: The child process running the script block cannot be assumed to have the same PS (filesystem) drives defined, but at least a PS-drive-based input path should be resolved to the underlying native path.

• The interchangeable use of / and \ isn't supported.

Steps to reproduce

New-PSDrive foo filesystem .; Set-Location foo:/

Start-Job { $pwd } -WorkingDirectory $pwd | Receive-Job -Wait -AutoRemove | Should -Match '^foo:[/\\]'

if (-not $IsWindows) {
  Start-Job { $pwd } -WorkingDirectory '\' | Receive-Job -Wait -AutoRemove | Should -Be '/'
}

Expected behavior

Both tests should pass.

Actual behavior

Both tests fail.

Environment data

PowerShell Core 7.0.0-preview.5