ipywidgets cannot be displayed in the SimplifiedOutputArea widget

[yidong72]

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I followed the example at https://github.com/jupyterlab/extension-examples/tree/master/advanced/kernel-output The ipywidgets can be displayed fine in the notebook cells, but not in the SimpliedOutputArea from @jupyterlab/outputarea created manually. I checked the rendermime, it contains the mimetypes for ipywidgets. Not sure what I need to do to make it work. Please help. Thanks.

[superjcd]

I had the exactly same problem when flollowing the kernel output example ;Did you figure out the problem now?