occasional graphical corruption when manipulating plots using the zoom and pan widgets

ipympl 0.9.4 を使用する JupyterLab 4.2.3 で大きなプロットを使って問題を再現し、その後、Zoom、Pan、Back、Forward、Home の各コントロールで操作します。再描画に失敗した後のキャンバスと軸を比較し、Download plot ボタンで結果を確認します。完了とは、ウィジェットの操作後に破損したピクセルが残らなくなることです。

Describe the issue

Manipulating fairly large (~M points) plots,. found occasionally that the redraw would fail, then would leave old pixels in place.

Using the 'Back to previous view' / 'Forward to next view' appears to fix the corruption, otherwise it just sticks around until the figure is redrawn by re-running the cell producing it. I.E., once it appears, hitting the 'home' button does not clear it.

Affects both the plot as well as the axes, with the axes becoming unreadable. Saving the corrupted pixels using the 'Download plot' button works - in that the saved png includes the pixel corruption.

Versions

 3.12.3 (main, Jul 15 2024, 15:34:06) [GCC 12.2.0]
ipympl version: 0.9.4
Selected Jupyter core packages...
IPython          : 8.26.0
ipykernel        : 6.29.5
ipywidgets       : 8.1.5
jupyter_client   : 8.6.2
jupyter_core     : 5.7.2
jupyter_server   : 2.14.2
jupyterlab       : 4.2.3
nbclient         : 0.10.0
nbconvert        : 7.16.4
nbformat         : 5.10.4
notebook         : not installed
qtconsole        : not installed
traitlets        : 5.14.3
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Jupyter: Interactive Computing

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Jupyter command `jupyter-nbextension` not found.

I assume you meant || jupyter labextension list not &&.

JupyterLab v4.2.3
/home/rgd2/.pyenv/versions/3.12.3/share/jupyter/labextensions
        jupyterlab_pygments v0.3.0 enabled OK (python, jupyterlab_pygments)
        jupyter-matplotlib v0.11.4 enabled OK
        @jupyter-widgets/jupyterlab-manager v5.0.13 enabled OK (python, jupyterlab_widgets)

Other labextensions (built into JupyterLab)
   app dir: /home/rgd2/.pyenv/versions/3.12.3/share/jupyter/lab