Horizontal scrolling no enable since updating Jupyterlab to 3.0.0

[ghislainp]

Describe the issue

For graphs wider than the browser window, the ipympl widget used to show an horizontal scroll bar at the end of the output. It does not show anymore since updating Jupyterlab to 3.0.0. I supposed this is a ipympl issue since eg. wide pandas dataframes still show the horitonzal scrollbar.

Versions

 3.7.9 | packaged by conda-forge | (default, Dec  9 2020, 21:08:20)
[GCC 9.3.0]
ipympl version: 0.5.8
jupyter core     : 4.7.0
jupyter-notebook : 6.1.6
qtconsole        : 5.0.1
ipython          : 7.19.0
ipykernel        : 5.4.2
jupyter client   : 6.1.7
jupyter lab      : 3.0.0
nbconvert        : 6.0.7
ipywidgets       : 7.6.2
nbformat         : 5.0.8
traitlets        : 5.0.5
Config option `kernel_spec_manager_class` not recognized by `ListNBExtensionsApp`.
Known nbextensions:
  config dir: /home/picardgh/.jupyter/nbconfig
    notebook section
      jupyter-js-widgets/extension  enabled
      - Validating: OK
  config dir: /home/picardgh/anaconda3/etc/jupyter/nbconfig
    notebook section
      jupyter-matplotlib/extension  enabled
      - Validating: OK
      nbresuse/main  enabled
      - Validating: OK
      plotlywidget/extension  enabled
      - Validating: OK
      jupyter-js-widgets/extension  enabled
      - Validating: OK
      nbdime/index disabled
      qgrid/extension  enabled
      - Validating: OK
    tree section
      ipyparallel/main  enabled
      - Validating: OK

[martinRenou]

How did you install ipympl? It does not yet support JupyterLab 3, you should not be able to display anything

[ghislainp]

conda update --all

[martinRenou]

I just published ipympl with support for JupyterLab 3 (not yet on conda-forge, maybe in around an hour). I don't know what's happening with your environment, you should not even see the plot.