PowerShell Intellisense and most right-click features stop working

[messy17]

Issue Description

When I author PowerShell scripts, I notice that after a non-deterministic amount of time, Intellisense for the cmdlets stops working. When this happens, the "PowerShell" progress message spins indefinitely. What else happens is that most of the right-click functions such as Go to references or Go to definition do not work. A blue progress-like indicator starts scrolling from the left to right across the top of the screen. The only way to fix this is to close VSC completely (reloading the extension of VSC does not resolve the issue). I first noticed this behavior two releases ago.
Filed with VSCode, who pointed the finger at the extension PowerShell Intellisense and most right-click feature stop working #93607 Closed
Attached Logs
microsoft/vscode#93607 [Closed]
StartEditorServices.zip
StartEditorServices.zip
StartEditorServices.zip

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Environment Information

Visual Studio Code

Name	Version
Operating System	Windows_NT x64 10.0.18363
VSCode	1.43.2
PowerShell Extension Version	2020.3.0

PowerShell Information

Name	Value
PSVersion	5.1.18362.628
PSEdition	Desktop
PSCompatibleVersions	1.0 2.0 3.0 4.0 5.0 5.1.18362.628
BuildVersion	10.0.18362.628
CLRVersion	4.0.30319.42000
WSManStackVersion	3.0
PSRemotingProtocolVersion	2.3
SerializationVersion	1.1.0.1

Visual Studio Code Extensions

Visual Studio Code Extensions(Click to Expand)

Extension	Author	Version
code-spell-checker	streetsidesoftware	1.8.0
docs-article-templates	docsmsft	0.2.7
docs-images	docsmsft	0.0.6
docs-linting	docsmsft	0.0.2
docs-metadata	docsmsft	1.0.4
docs-preview	docsmsft	0.3.44
docs-yaml	docsmsft	0.2.4
LinkCheckMD	blackmist	0.3.1
powershell	ms-vscode	2020.3.0
vscode-markdownlint	DavidAnson	0.34.0
vscode-sidebar	Acrolinx	1.1.2
vscode-yaml	redhat	0.7.2

[TylerLeonhardt]

Can you give this a go in the PowerShell Preview extension? It has a few performance fixes in it and it might be fixed in that already.

[messy17]

@TylerLeonhardt Thank you for the direction. I disabled the current and installed the preview. Encountered the same problem using the preview. Additional info-- it does not seem to matter how big the script is. One script is 800 lines while the other is 200. the same side effects occur the PowerShell extension progress message just spins endlessly. Also, when in this state, code folding does not work either. It is visible, but if you click the chevron, it does not respond.

[PrzemyslawKlys]

I've been seeing the same thing. I'm using the newest preview. First, few autocomplete features work fine and then it suddenly stops. Terminal continues to work (PSReadLine).

[TylerLeonhardt]

Thanks for the info! Can you also attach the logs here so we can get a better idea of what's going on?

[PrzemyslawKlys]

1586085787-b4f071c6-ec13-4ba6-8d6d-7552d19a59661586085785900.zip

When I stumble on the issue IntelliSense doesn't work. But if you wait enough time it comes back from time to time.

[PrzemyslawKlys]

1586174384-d0306bd0-1f9c-47dc-b8d6-b57335ec7a951586174379982.zip

Another log.