Ubiquitous parameters don't always auto-complete

System Details

System Details Output

### VSCode version: 1.42.1 c47d83b293181d9be64f27ff093689e8e7aed054 x64

### VSCode extensions:
abusaidm.html-snippets@0.2.1
bierner.github-markdown-preview@0.0.2
bierner.markdown-checkbox@0.1.3
bierner.markdown-emoji@0.0.9
bierner.markdown-preview-github-styles@0.1.6
bierner.markdown-yaml-preamble@0.0.4
DavidAnson.vscode-markdownlint@0.34.0
DotJoshJohnson.xml@2.5.0
eamodio.gitlens@10.2.1
EditorConfig.EditorConfig@0.14.4
eg2.tslint@1.0.44
Mikael.Angular-BeastCode@8.1.2
ms-dotnettools.csharp@1.21.13
ms-python.python@2020.2.64397
ms-vscode-remote.remote-containers@0.101.1
ms-vscode-remote.remote-ssh@0.49.0
ms-vscode-remote.remote-ssh-edit@0.49.0
ms-vscode-remote.remote-ssh-explorer@0.49.0
ms-vscode-remote.remote-wsl@0.42.3
ms-vscode-remote.vscode-remote-extensionpack@0.19.0
ms-vscode.cpptools@0.26.3
ms-vscode.powershell@2020.3.0
ms-vscode.vscode-typescript-tslint-plugin@1.2.3
msjsdiag.debugger-for-chrome@4.12.6
msjsdiag.debugger-for-edge@1.0.14
robinbentley.sass-indented@1.5.1
sibiraj-s.vscode-scss-formatter@1.4.3
SimonSiefke.svg-preview@2.8.3
twxs.cmake@0.0.17
vsls-contrib.gistfs@0.0.61
wayou.vscode-todo-highlight@1.0.4
yzhang.markdown-all-in-one@2.7.0


### PSES version:

### PowerShell version:

Name                           Value
----                           -----
PSVersion                      7.0.0
PSEdition                      Core
GitCommitId                    7.0.0
OS                             Microsoft Windows 10.0.18363
Platform                       Win32NT
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1
WSManStackVersion              3.0

Issue Description

Trying to complete invoke-webrequest -error is not supplying the expected ErrorAction completion.

Expected Behaviour

The auto-complete list should provide -ErrorAction

Actual Behaviour

The auto-complete list initially does not supply it:

If I type invoke-webrequest -erroractio then it finds it in the auto-complete list but at this point I’ve typed nearly the whole parameter name. Something’s not quite right here.

Attached Logs

Follow the instructions in the troubleshooting docs about capturing and sending logs.

1583432852-d0e516fc-13f8-444b-877f-cecf115455871583432271941.zip

[rjmholt]

I’m seeing this now too

And now I can’t repro it again!

[TylerLeonhardt]

There’s nothing we can really do for this since we rely on TabExpansion2 so I’m going to close this. If you wanna open this in the PowerShell repo I think that would be helpful.