Use ipywidgets_bokeh with panel

I am trying to integrate IPyWidgets to panel application.

for that, I try Bokeh example:

from ipywidgets import FloatSlider
angle = FloatSlider(min=0, max=360, value=0, step=1, description="Angle")

def on_change(change):
    print(f"angle={change['new']} deg")
angle.observe(on_change, names="value")
from ipywidgets_bokeh import IPyWidget
ipywidget = IPyWidget(widget=angle)

The problem is when i call pn.extension() the whole JupyterLab UI breaks.

Before running extension():

After running extension():

see screencast: