Why new tab 'Document' is opened on startup?

[dyardy]

Describe the bug

How can I stop the extension from opening new Document tab on startup? This appears to be in development mode only.

Reproduction

Start with vscode the extension

System Info

Windows

Used Package Manager

npm

Validations

• Follow our Code of Conduct
• Read the Contributing Guide.
• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
• Check that this is a concrete bug. For Q&A, please open a GitHub Discussion instead.
• The provided reproduction is a minimal reproducible of the bug.

[antfu]

What do you mean?