System details:

Positron and OS details:

Positron Version: 2025.12.0 build 46
Code - OSS Version: 1.105.0
Commit: b3540cf
Date: 2025-11-07T15:38:35.513Z
Electron: 37.6.0
Chromium: 138.0.7204.251
Node.js: 22.19.0
V8: 13.8.258.32-electron.0
OS: Darwin arm64 24.6.0

Describe the issue:

The standard across notebook UIs is for the "run below" cell action to run the selected cell and all cells below. In Positron notebooks, we currently run only cells below the selected.

If we fix this, we should be sure to also update the name to match the new behavior.

Steps to reproduce the issue:

1. Open a notebook with 3 cells
2. Click the "run below" button on the 2nd cell
3. Verify that the 2nd and 3rd cells were run, but not the 1st - FAIL

Were there any error messages in the UI, Output panel, or Developer Tools console?

Nope.