ignores changes below certain cells

[mesvam]

Description

I discovered a case where the extension is not showing diffs below a particular cell. The cell output contains a large image. I've exported a minimal subsection of the notebook that reproduces the issue: attached here: test.zip

Reproduce

1. Init a git repo, and add the notebook file and make a commit
2. Change the text in the first cell "above", save the notebook, and make a commit
3. Change the text in the last cell "below", save the notebook, and make a commit
4. Open the sidebar in Juypter-lab, go to the last commit and click the "View file changes" icon

Current behavior

Changes to the cell "above" are displayed correctly, but changes to the cell "below" do not appear. The display shows as if the file is unchanged.

Expected behavior

Changes to all cells should display as diffs

Context

• Python package version:

  # packages in environment at C:\Users\<redacted>\AppData\Local\Programs\Miniconda3:
  #
  # Name                    Version                   Build  Channel
  jupyterlab-git            0.50.0          py311haa95532_0

• Extension version:

  JupyterLab v4.2.4
  C:\Users\<redacted>\AppData\Local\Programs\Miniconda3\share\jupyter\labextensions
      ipyparallel-labextension v8.6.1 enabled  X
      jupyter-matplotlib v0.11.3 enabled ok
      nbdime-jupyterlab v3.0.1 enabled ok
      @jupyter-widgets/jupyterlab-manager v5.0.10 enabled ok (python, jupyterlab_widgets)
      @jupyterlab/git v0.50.0 enabled ok (python, jupyterlab-git)
  
  The following extensions may be outdated or specify dependencies that are incompatible with the current version of jupyterlab:
      ipyparallel-labextension
  
  If you are a user, check if an update is available for these packages.
  If you are a developer, re-run with `--verbose` flag for more details.

• Git version: git version 2.39.2
• Operating System and its version:

Command Line Output

Paste the output from your command line running `jupyter lab` here, use `--debug` if possible.

Web Browser Output

Paste the output from your browser web console here.