Unexpected behaviour of rendering multiple the same instances of ipywidgets.Output

[dsonyy]

Applies To

• Notebooks (.ipynb files)
• Interactive Window and/or Cell Scripts (.py files with #%% markers)

What happened?

Vscode notebook has a problem with rendering correctly a cell with the following code:

import ipywidgets
from IPython.display import display

out = ipywidgets.Output()

with out:
    print("test")
    
display(out)
display(out)

Expected behaviour:
The same as in Jupyter Notebooks and Jupyter Lab. Cell should render the same instance of a widget two times:

test
test

Actual behaviour:
The widget is rendered only once:

test

If we add time.sleep between two display calls:

import ipywidgets
from IPython.display import display
import time

out = ipywidgets.Output()

with out:
    print("test")
    
display(out)
time.sleep(1)
display(out)

the behaviour is correct - two widgets are rendered which is worrying.

VS Code Version

1.80.1

Jupyter Extension Version

v2023.6.1101941928

Jupyter logs

No response

Coding Language and Runtime Version

Python 3.9.7

Language Extension Version (if applicable)

No response

Anaconda Version (if applicable)

No response

Running Jupyter locally or remotely?

Local

[DonJayamanne]

Thanks for filing this issue, I can replicate this at my end.
Will look into this.