Debugger does not recover after incomplete PowerShell command used

[mrward]

To repro:

1. Create and save a new powershell file.
2. Add one line to the file: Write-Output
3. Put a breakpoint on that line
4. Run the debugger.
5. Breakpoint is hit.
6. Allow the debugger to continue by clicking the Run button in the status bar.

Expected result:

• PowerShell script finishes.

Actual result:

• Status bar shows debugger still running. Presumably PowerShell is waiting for the user to provide parameters for the write-output command.
• Stopping the debugger and then running it again does not hit any breakpoints.