clear_output/display different behaviour Voila / Jupyter Lab vs Jupyter Notebook

[DiegoF90]

This issue is a duplicate of 1265 in Voila

Clearing or displaying an output widget seems to have a different behaviour on Voila / Jupyter Lab vs Jupyter Notebook.

I would expect the code below to show both "Text 1" and "Text 2" after every click on the checkbox. This is the behaviour seen in Jupyter Notebook but not using Voila nor Jupyter Lab.
In Voila/Jupyter Lab both "Text 1" and "Text 2" are shown on the first click, but only "Text 2" is shown on subsequent clicks.

import ipywidgets as widgets 

def build_o1():
    o1 = widgets.Output()
    t1 = widgets.Label(value="Text 1")
    with o1:
        display(t1)
        print("Text 2")
    return o1

o1 = build_o1()
o2 = widgets.Output()
c1 = widgets.Checkbox(description='Show/Hide')
display(c1)
display(o2)

def c1_event_handler(obj):
    if c1.value:
        with o2:
            display(o1)
    else:
        o2.clear_output()

c1.observe(c1_event_handler, names="value")

• voila version 0.4.0
• Operating System and version: Windows 10
• Browser and version: Google Chrome [Version 107.0.5304.88 (Official Build) (64-bit)]

[vidartf]

I did some basic level debugging: The issue can be narrowed further by observing that after o2.clear_output() is called, the "Text 2" output disappears from o1.