Notebook "Add Code Cell" button sometimes does not focus the newly created cell

[RossBencina]

Does this issue occur when all extensions are disabled?: No (Requires Jupyter extension)

• VS Code Version:
  Version: 1.99.3 (user setup)
  Commit: 17baf84
  Date: 2025-04-15T23:18:46.076Z
  Electron: 34.3.2
  ElectronBuildId: 11161073
  Chromium: 132.0.6834.210
  Node.js: 20.18.3
  V8: 13.2.152.41-electron.0
  OS: Windows_NT x64 10.0.19045
• Jupyter extension version:
  Identifier ms-toolsai.jupyter
  Version 2025.3.0
  Last Updated 2025-04-19, 20:21:58
• OS Version:
  Windows 10 2H22 April patch level

Steps to Reproduce:

1. Open an .ipynb notebook
2. Hover over the bottom of a cell, the buttons [+Code] and [+ Markdown] appear (maybe other buttons too)
3. Click the [+Code] ("Add Code Cell") button
4. A new code cell is created (so far so good)

Here is the problem:

5a. Expected behavior: Sometimes the new cell is focused with a blinking cursor and you can start typing right away

5b. Intermittent bug: Sometimes the new cell is not focused and you need to type the ENTER key to focus the cell.

I have found no way to reliably reproduce the issue. It just happens sometimes and it is very annoying.