Opening Python file after window reload overwrites file with contents of settings.json

[singularitti]

Type: Bug

Bug Description

When the Python extension is enabled, and I open a Python file in the editor, then reload the VSCode window (Developer: Reload Window), the contents of my settings.json file are copied into the Python file, completely overwriting its original content.

This is very disruptive and has led to loss of code. The behavior does not occur when the Python extension is disabled.

Steps to Reproduce

1. Open VSCode with the Python extension enabled.
2. Open any .py file.
3. Ensure that you also have a settings.json (with some identifiable content).
4. Use the Developer: Reload Window command.
5. Observe that the Python file content gets replaced with the contents of settings.json.

What I’ve Tried

• I ran the Extension Bisect tool and confirmed that this issue is caused by the Python extension.
• Disabling the extension prevents the issue from happening.
• This does not appear to be caused by any other extensions.

VSCode & Extension Info

• VSCode version:

Version: 1.100.2
Commit: 848b80aeb52026648a8ff9f7c45a9b0a80641e2e
Date: 2025-05-14T21:47:40.416Z
Electron: 34.5.1
ElectronBuildId: 11369351
Chromium: 132.0.6834.210
Node.js: 20.19.0
V8: 13.2.152.41-electron.0
OS: Darwin arm64 24.5.0

• Python extension version: 2025.6.1
• OS: macOS 15.5 (24F74)

Extension version: 2025.8.0
VS Code version: Code 1.100.2 (848b80aeb52026648a8ff9f7c45a9b0a80641e2e, 2025-05-14T21:47:40.416Z)
OS version: Darwin arm64 24.5.0
Modes:

• Python version (& distribution if applicable, e.g. Anaconda): 3.13.3
• Type of virtual environment used (e.g. conda, venv, virtualenv, etc.): Unknown

[singularitti]

[eleanorjboyd]

This is a wild error and I have no idea how it could happen... @karthiknadig ideas?

[karthiknadig]

Looking at the screen there, there seems to be other extensions installed. We would need the full list of extensions. A problem here is that most python based extensions depend on the python extension. So disabling python extension would in turn disable those features.

We need a list of extension to repro this locally.

[singularitti]

OK. I figured out the bug was from another extension called Python Enhanced Sort. I have opened an issue there, and this will be closed. Thanks!