• VS Code Version: v1.57.1
• OS Version: Win 20H1

Steps to Reproduce:

1. Create an empty repository
2. Do npm init && npm install whatever
3. Switch to the SVM view
4. Oops, you have one bajillion changed files in your working copy! Right-click the node_modules folder in the SCM view and choose "Add to .gitignore".

Expected behavior:

• node_modules/ is added to the .gitignore.

Actual behavior:

• Every single file in the node_modules subtree of the repository is added separately to the .gitignore ...