holoview.Div() doesn't display

[butsuri43]

The hv.Div command produces output that is not visible in JupyterLab. The output is also not visible in the holoviews docs, https://holoviews.org/reference/elements/bokeh/Div.html.

ALL software version info

the latest software versions do not work (python 3.10):

bokeh                     3.3.0              pyhd8ed1ab_0    conda-forge
holoviews                 1.18.0             pyhd8ed1ab_0    conda-forge
panel                     1.3.0              pyhd8ed1ab_0    conda-forge
param                     2.0.0              pyhca7485f_0    conda-forge
#
jupyter-lsp               2.2.0              pyhd8ed1ab_0    conda-forge
jupyter_client            8.5.0              pyhd8ed1ab_0    conda-forge
jupyter_core              5.4.0           py310hff52083_0    conda-forge
jupyter_events            0.8.0              pyhd8ed1ab_0    conda-forge
jupyter_server            2.9.1              pyhd8ed1ab_0    conda-forge
jupyter_server_terminals  0.4.4              pyhd8ed1ab_1    conda-forge
jupyterlab                4.0.7              pyhd8ed1ab_0    conda-forge
jupyterlab_pygments       0.2.2              pyhd8ed1ab_0    conda-forge
jupyterlab_server         2.25.0             pyhd8ed1ab_0    conda-forge
numpy                     1.26.0          py310hb13e2d6_0    conda-forge
pandas                    2.1.2           py310hcc13569_0    conda-forge
pyviz_comms               3.0.0              pyhd8ed1ab_0    conda-forge

The first combination that works, albeit without the caption (python 3.10):

bokeh                     2.4.3              pyhd8ed1ab_3    conda-forge
holoviews                 1.17.1             pyhd8ed1ab_0    conda-forge
panel                     0.14.4             pyhd8ed1ab_0    conda-forge
param                     1.13.0             pyh1a96a4e_0    conda-forge
#
jupyter-lsp               2.2.0              pyhd8ed1ab_0    conda-forge
jupyter_client            8.5.0              pyhd8ed1ab_0    conda-forge
jupyter_core              5.4.0           py310hff52083_0    conda-forge
jupyter_events            0.8.0              pyhd8ed1ab_0    conda-forge
jupyter_server            2.9.1              pyhd8ed1ab_0    conda-forge
jupyter_server_terminals  0.4.4              pyhd8ed1ab_1    conda-forge
jupyterlab                4.0.7              pyhd8ed1ab_0    conda-forge
jupyterlab_pygments       0.2.2              pyhd8ed1ab_0    conda-forge
jupyterlab_server         2.25.0             pyhd8ed1ab_0    conda-forge
numpy                     1.26.0          py310hb13e2d6_0    conda-forge
pandas                    2.1.2           py310hcc13569_0    conda-forge
pyviz_comms               3.0.0              pyhd8ed1ab_0    conda-forge

Description of expected behavior and the observed behavior

When running hv.Div(text) the output should be similar to the one obtained with bokeh. The first example from holoviews' docs,https://holoviews.org/reference/elements/bokeh/Div.html, should result in:

Related issue: #4743.

In the software version combination that work for me a milder case of the issue described there is visible (the title levels are shwon correctly, only the caption is missing):

Complete, minimal, self-contained example code that reproduces the issue

From holoviews' docs:

import holoviews as hv
hv.extension("bokeh")

hv.Div("""
<h1>Div</h1>
<h3>A simple demo</h2>

<figure>
<img src="https://assets.holoviews.org/logo/holoviews_color_icon_500x500.png" height='200' width='200'>
<figcaption><b>Fig 1:</b> This is a figure caption with $$LaTeX$$</figcaption>
""")

Screenshots or screencasts of the bug in action

See also missing outputs in: https://holoviews.org/reference/elements/bokeh/Div.html

[rsdenijs]

I am having the same issue

[hoxbro]

Behind the scene hv.Div uses panel.models.markup.HTML, this container has visibility: hidden, to see this run this with bokeh serve, and look through the inspector.

from panel.models.markup import HTML
from bokeh.io import curdoc, show
from html import escape

text="""
<h1>Div</h1>
<h3>A simple demo</h2>
<figure>
<img src="https://assets.holoviews.org/logo/holoviews_color_icon_500x500.png" height='200' width='200'>
<figcaption><b>Fig 1:</b> This is a figure caption with $$LaTeX$$</figcaption>
"""
html = HTML(text=escape(text), width=200, height=200)
curdoc().add_root(html)

This seems to have been introduced in holoviz/panel#5275, where the container is set to hidden but never changed back to visible. The simplest fix is to add this.style_redraw to the end of render, but it could break the optimization done in the original PR. Thoughts @philippjfr?

https://github.com/holoviz/panel/blob/0d026d651aa811e56b70bb1f45b00a4859931441/panel/models/html.ts#L75

[github-actions]

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