Creating "New View" for notebook/output does not work with bokeh plots output

[mpanighel]

When using "Create new view for output" with a cell that outputs a Bokeh plot, it just doubles the plot in the original cell output, with no plot output in the new View. If a second "Output View" is created, the plot is tripled in the original, and so on...

Edit: the same happens with "New View for Notebook".

The issue is the same as this (with holoviews).

Other outputs (such as strings in the example below) are instead correctly sent to the new "child" Views.

Interestingly, splitting the original cell (Shift+Ctrl+-), while making disappear all the plots in the original cell output, correctly updates the first created "child" View. All the other "child" Views remain instead without any plot. This splitting also makes "orphan" all child Views (they are no longer linked/updated to the original cell).

Code to reproduce the issue (tested on a trusted notebook, in a fresh conda environment with jupyterlab 1.2.5, bokeh 1.4.0, python 3.7.6):

from bokeh.io import output_notebook, show
from bokeh.plotting import figure

output_notebook()

print("First line")

p = figure()
p.circle([1, 2, 3, 4, 5], [6, 7, 2, 4, 5])

show(p)

print("Second line")

[vidartf]

Would you mind cross-posting this onto holoviews repo so they can also be made aware of this? Or linking such an issue here if it already exists?

[maximlt]

I observe the same behaviour with bokeh 2.0.0 and jupyterlab 2.0.1.

[jasongrout]

My guess is that this is more of a bokeh issue than a JupyterLab issue. Is there an issue in the bokeh repo where this discussion can happen?

[maximlt]

There a discussion here holoviz/pyviz_comms#3, that's a good start.

[pnsvk]

this seems to be a long pending one.. any updates / timelines / plans to prioritize this ?