PowerShell extension crashes when running large scripts in VS Code 1.97.2

[c01d43am]

Prerequisites

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

Summary

When running large scripts in the PowerShell extension for VS Code, the terminal becomes unresponsive, and execution stops unexpectedly. I expected the script to run fully without crashes, but VS Code freezes instead.

PowerShell Version

Name                           Value                                                                                   
----                           -----                                                                                   
PSVersion                      5.1.26100.2161                                                                          
PSEdition                      Desktop                                                                                 
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0...}                                                                 
BuildVersion                   10.0.26100.2161                                                                         
CLRVersion                     4.0.30319.42000                                                                         
WSManStackVersion              3.0                                                                                     
PSRemotingProtocolVersion      2.3                                                                                     
SerializationVersion           1.1.0.1

Visual Studio Code Version

1.97.2
x64

Extension Version

ms-vscode.powershell@2025.0.0

Steps to Reproduce

Open VS Code (code .)
Install PowerShell extension (ms-vscode.powershell@2025.0.0)
Open a large PowerShell script (.ps1 file with >1000 lines)
Run the script (F5 or Ctrl + F5)
VS Code terminal freezes, and no output is displayed.
"The script should execute successfully without freezing the VS Code terminal."

Visuals

No response

Logs

No response

[JustinGrote]

Thanks for your submission!

Can you record a reproduction? You can use Win-Shift-R on Windows 11 to start recording, and you can paste the result directly into the issue or a comment reply.

Also please capture logs at the trace level as per the guidance.

[andyleejordan]

Please note that the Extension Terminal will by design be tied up while the script is executing, as it's what's executing it.