Vscode-jupyter: Can't run two notebooks at the same time with the same python environment (using native notebooks)

[matrix303]

Bug: Notebook Editor, Interactive Window, Editor cells

Steps to cause the bug to occur

1. Open notebook 1 in new editor, select python env, run first cell - kernel starts and cell runs.
2. Open notebook 2 in new editor, select python env, run first cell - kernel starts and cell runs.
3. Go back to notebook 1, run any cell (even the first one) - nothing happens.
4. go back to notebook 2, all cells run.

Actual behavior

cant run two notebooks together.

• BOTH notebooks run together properly same way in the old editor

Expected behavior

both notebooks should be able to run cells at the same time

Your Jupyter and/or Python environment

_Please provide as much info as you readily know_

• Jupyter server running: Local | Remote | N/A
• Extension version: v2020.9.102277-dev
• VS Code version: #.## 1.49.0-insider
• Setting python.jediEnabled: true | false
• Setting python.languageServer: Jedi | Microsoft | None
• Python and/or Anaconda version: #.#.#
• OS: Windows | Mac | Linux (distro):
• Virtual environment: conda | venv | virtualenv | N/A | ...

Python Output

Microsoft Data Science for VS Code Engineering Team: @rchiodo, @IanMatthewHuff, @DavidKutu, @DonJayamanne, @greazer, @joyceerhl

[IanMatthewHuff]

@matrix303 thanks for filing this and for checking out the new notebook preview. I repro this behavior as well with our released version. Right now our support for the new preview notebooks is coming in very fast, so there will be a lot of improvements each version and lots of incoming changes. We'll look at the fix for this.

[matrix303]

Np just letting you guys know!

[IanMatthewHuff]

We very much appreciate folks checking the preview work out and filing issues. It's going to take a bit to transition everything over cleanly, but the experience is going to be very good after it's all done.

[joyceerhl]

I cannot reproduce this in version 2020.8.108011 of the extension and 1.49.0-insider. @matrix303 does this behavior persist for you?

[DonJayamanne]

Lets close for now, and will re-open if the issue persists.

[matrix303]

Issue was solved in the later updates.