[Bug] MCP server connection fails to open browser for authentication

Bug Description
MCP server connection won't open browser to authenticate

Environment Info

• Platform: win32
• Terminal: vscode
• Version: 2.1.69
• Feedback ID: 3a2daf56-d101-4b07-bd5c-64ea1c2ad88d

Errors

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Atlasian MCP lost connection randomly:

<img width="463" height="165" alt="Image" src="https://github.com/user-attachments/assets/fffc712a-92f9-4f90-8959-c45a0bed127d" />

But once I click on "Authenticate" it doesn't open browser.

<img width="466" height="338" alt="Image" src="https://github.com/user-attachments/assets/fc084278-4ae0-4de1-95cf-c55805add447" />

Tried disabling the MCP Server then enabling again, restarting Claude, restarting VS Code, restarting Windows, enabling/disabling plugins ... Nothing worked.