Steps to reproduce

In a non-elevated PowerShell, try to tab complete parameters to a script that looks like:

#requires -RunAsAdministrator
param($ABC)

Expected behavior

Completion works. Note that the current behavior is slightly useful as an indicator that the script won't run even after finishing the command line, but it is poor behavior in an editor that probably isn't running elevated.

Actual behavior

Completion fails silently

Environment data

> $PSVersionTable

Name                           Value
----                           -----
PSVersion                      6.0.0-beta
PSEdition                      Core
GitCommitId                    v6.0.0-beta.5
OS                             Microsoft Windows 10.0.16262
Platform                       Win32NT