Quarto authoring: losing typing cursor focus when using "render on save"

System details:

Positron and OS details:

Positron Version: 2025.12.0 build 105
Code - OSS Version: 1.105.0
Commit: 98537e9935afc48311e32033c6518a3c89829789
Date: 2025-11-20T07:18:54.863Z
Electron: 37.6.0
Chromium: 138.0.7204.251
Node.js: 22.19.0
V8: 13.8.258.32-electron.0
OS: Darwin arm64 25.1.0

Describe the issue:

When authoring a Quarto document (in "Source" mode), using the "Render on Save" option, saving the file (using cmd + S), makes the cursor leave the typing area and the focus jumps on the viewer window. To continue typing the document, you need to click or cmd + & to regain focus on the editor area breaking typing flow.

Steps to reproduce the issue:

1. Type Quarto document in source mode, activating the "Render on Save" option and click the "Preview" button
2. Use cmd + S shortcut to save the document
3. Notice that the typing cursor is not visible anymore as the focus has moved to the preview window

Expected or desired behavior:

I expect the cursor to stay in the editor window so I can continue typing the document.

Start by reproducing the Quarto source-mode workflow with Render on Save enabled: open Preview, edit the document, and save with Cmd+S. Trace the render-on-save and preview focus handling; done means saving renders the document without moving focus away from the editor, so typing can continue immediately.