Custom widget manager breaks Accordion widget

[matanper]

The custom widget manager breaks the accordion widget:

from ipywidgets import widgets
from google.colab import output

output.enable_custom_widget_manager()

accordion = widgets.Accordion(children=[widgets.IntSlider(), widgets.Text()])
accordion.set_title(0, 'Slider')
accordion.set_title(1, 'Text')
accordion