Unregister-EditorCommand doesn't remove command from list

[TMA-2]

Prerequisites

• [x] I have written a descriptive issue title.
• [x] I have searched all open and closed issues to ensure it has not already been reported.
• [x] I have read the troubleshooting guide.
• [x] I am sure this issue is with the extension itself and does not reproduce in a standalone PowerShell instance.
• [x] I have verified that I am using the latest version of Visual Studio Code and the PowerShell extension.
• [x] If this is a security issue, I have read the security issue reporting guidance.

Summary

When calling Unregister-EditorCommand or $psEditor.UnregisterCommand(), the command remains in the Additional Commands list, leading to duplicate entries when my profile module is re-loaded. When trying to invoke the command afterwards, an exception is thrown, so the command is being unregistered, but it remains on the list.

PowerShell Version

Name                           Value
----                           -----
PSVersion                      7.5.3
PSEdition                      Core
GitCommitId                    7.5.3
OS                             Microsoft Windows 10.0.22631
Platform                       Win32NT
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1
WSManStackVersion              3.0

Name             : Visual Studio Code Host
Version          : 2025.3.1
InstanceId       : db3b07b7-3b3b-40bb-8b54-c57ae4548a21
UI               : System.Management.Automation.Internal.Host.InternalHostUserInterface
CurrentCulture   : en-US
CurrentUICulture : en-US
PrivateData      : Microsoft.PowerShell.ConsoleHost+ConsoleColorProxy
DebuggerEnabled  : True
IsRunspacePushed : False
Runspace         : System.Management.Automation.Runspaces.LocalRunspace

Visual Studio Code Version

1.104.1
0f0d87fa9e96c856c5212fc86db137ac0d783365
x64

Extension Version

[email protected]
[email protected]
[email protected]
[email protected]
[email protected]

(note: PowerShell Pro Tools is disabled in my current workspace)

Steps to Reproduce

1. Register any simple command, like `Register-EditorCommand -Name MyCommand -DisplayName "Test Command" -ScriptBlock {$psEditor.Window.ShowInformationMessage("I came from Register-EditorCommand.")}
2. View registered commands with Shift+Alt+S or "PowerShell: Show Additional Commands from PowerShell Modules" to ensure the command is registered
3. Invoke the command to verify it works
4. Unregister the command with Unregister-EditorCommand -Name MyCommand or $psEditor.UnregisterCommand("MyCommand")
5. View registered commands again to find if the command remains

Visuals

Logs

For whatever reason, even setting "powershell.developer.editorServicesLogLevel": "Trace" and "powershell.trace.server": "verbose", the PowerShell output log looks about the same as when it's set to "Information", despite the Integrated Terminal showing trace information (e.g. "DEBUG: [Trace] Logging started", etc.). Nothing showed up about registering commands or loading modules.

The only thing I could find after unregistering the command and executing it from the list is from the Extension Host log:

2025-09-18 15:29:28.824 [error] Error: Internal Error - System.Collections.Generic.KeyNotFoundException: Editor command not found: 'ConvertComment3Center'
   at Microsoft.PowerShell.EditorServices.Services.Extension.ExtensionService.InvokeCommandAsync(String commandName, EditorContext editorContext, CancellationToken cancellationToken) in C:\__w\1\s\src\PowerShellEditorServices\Services\Extension\ExtensionService.cs:line 146
   at Microsoft.PowerShell.EditorServices.Services.Extension.InvokeExtensionCommandHandler.Handle(InvokeExtensionCommandParams request, CancellationToken cancellationToken) in C:\__w\1\s\src\PowerShellEditorServices\Services\Extension\Handlers\InvokeExtensionCommandHandler.cs:line 27
   at OmniSharp.Extensions.LanguageServer.Server.Pipelines.SemanticTokensDeltaPipeline`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at OmniSharp.Extensions.LanguageServer.Server.Pipelines.ResolveCommandPipeline`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestPreProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestPostProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestExceptionProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestExceptionProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestExceptionActionProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestExceptionActionProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at OmniSharp.Extensions.JsonRpc.RequestRouterBase`1.<RouteRequest>g__InnerRoute|7_0(IServiceScopeFactory serviceScopeFactory, Request request, TDescriptor descriptor, Object params, CancellationToken token, ILogger logger)
   at OmniSharp.Extensions.JsonRpc.RequestRouterBase`1.RouteRequest(IRequestDescriptor`1 descriptors, Request request, CancellationToken token)
   at OmniSharp.Extensions.JsonRpc.DefaultRequestInvoker.<>c__DisplayClass10_0.<<RouteRequest>b__5>d.MoveNext()
    at handleResponse (c:\Users\e.dunhjo\.vscode\extensions\ms-vscode.powershell-2025.3.1\dist\extension.js:30293:40)
    at handleMessage (c:\Users\e.dunhjo\.vscode\extensions\ms-vscode.powershell-2025.3.1\dist\extension.js:30103:11)
    at processMessageQueue (c:\Users\e.dunhjo\.vscode\extensions\ms-vscode.powershell-2025.3.1\dist\extension.js:30118:13)
    at Immediate.<anonymous> (c:\Users\e.dunhjo\.vscode\extensions\ms-vscode.powershell-2025.3.1\dist\extension.js:30094:11)
    at processImmediate (node:internal/timers:485:21)
    at process.callbackTrampoline (node:internal/async_hooks:130:17) PowerShell.ShowAdditionalCommands {"value":"ms-vscode.powershell","_lower":"ms-vscode.powershell"}