Bug Report

Steps to Reproduce:

$ micromamba create -y -p /tmp/venv.perspective jupyterlab perspective -c conda-forge
+ jupyterlab 4.0.10
+ perspective 2.7.1
$ micromamba activate /tmp/venv.perspective
$ jupyter lab

In an empty notebook, run anything that generates reasonably long output like

for i in range(500):
    print(i)

(note that perspective does not need to be imported) and then Right Click and select "Enable Scrolling for Outputs" in the context menu. No scroll bar appears.

Expected Result:

Scrollbar should appear when using "Enable Scrolling for Outputs". Here is someone else's video of what this looks like.

Actual Result:

No scroll bar appears when using "Enable Scrolling for Outputs" when perspective is installed in the environment.

Environment:

I've observed that this bug happens on MacOS & Chrome, Safari; Ubuntu & Chrome, Firefox; and across various versions of jupyterlab >= 3.5 and perspective >= 2.0, installed via any of pip / conda / mamba.