Window focus during debug in VSCode

•VSCode Version: Code 1.19.3 (7c4205b, 2018-01-25T10:36:34.867Z)
•OS Version: Windows_NT x64 10.0.16299
•Extensions:
Author (truncated)
Version
PowerShell ms- 1.5.1
team ms- 1.122.0

Issue Description

I use the code snippet below a lot to display a windows explorer window for the selection of a input file by a end user. When debugging in VSCode the dialog box that is called is not brought to the foreground. In order to see the dialog, you need to minimize VSCode answer the dialog which returns focus back to VSCode.

Function Get-FileName($StartDirectory){
[System.Reflection.Assembly]::LoadWithPartialName("System.windows.forms") | Out-Null
$openFileDialog = New-Object System.Windows.Forms.OpenFileDialog
$openFileDialog.initialDirectory = $StartDirectory
$openFileDialog.filter = "All files (.)| ."
$openFileDialog.ShowDialog() | Out-Null
$openFileDialog.filename
}

Attached Logs

PSR of issue.zip

Start by reproducing the PowerShell Windows Forms OpenFileDialog example while debugging in VS Code on Windows, then review the attached PSR logs for focus-related evidence. Done means the dialog reliably appears in the foreground during a debug session without requiring VS Code to be minimized.