Rendered Markdown jumps / flickers as Notebook runs

[burkeholland]

Environment data

VS Code version: 1.61.0-insider
Jupyter Extension version (available under the Extensions sidebar): v2021.9.1001294413
Python Extension version (available under the Extensions sidebar): v2021.9.1246542782
OS (Windows | Mac | Linux distro) and version: Windows 11
Python and/or Anaconda version: conda 4.10.3
Type of virtual environment used (N/A | venv | virtualenv | conda | ...): conda
Jupyter server running: Local | Remote | N/A

Expected behaviour

Rendered text doesn't move while Notebook is running

Actual behaviour

Rendered Markdown text flashes/jumps/flickers as Notebook executes

Steps to reproduce:

1. Fork Golden Scenario Repo
2. Scroll down to cell 42
3. Run all above/below
4. "Neural Network" text flickers

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