markdown cells not being split for code

[RipPennell]

Environment data

• VS Code version: 1.63.0
• Jupyter Extension version (available under the Extensions sidebar): v2021.11.1001550889
• Python Extension version (available under the Extensions sidebar): v2021.12.1559732655
• OS (Windows | Mac | Linux distro) and version: Windows
• Python and/or Anaconda version: 3.7.9
• Type of virtual environment used (N/A | venv | virtualenv | conda | ...): conda
• Jupyter server running: Local

Expected behaviour

XXX

Actual behaviour

XXX

Steps to reproduce:

[NOTE: Self-contained, minimal reproducing code samples are extremely helpful and will expedite addressing your issue]

1. copy paste the following cell:

#%% [markdown]
# ## Some Markdown Text
print("hi")

The output in IPython 7.30.1 will only be the markdown text, with no code running.

Removing the "[markdown]" from the cell lets the markdown text be treated as a comment and the code executes, since it's not just a code cell. All of my python files have cells that start with markdown and go into code. Do I have to manually separate every cell?

Same problem is here microsoft/vscode-jupyter#3501

The automatic splitting appears to be a feature according to microsoft/vscode-jupyter#2285
Seems this is indeed a bug then

[RipPennell]

Downgrading to an earlier version of the Jupyter Extension fixes this issue, so the issue is in the Jupyter Extension specifically

[rchiodo]

Thanks for the issue. This is indeed a regression.