Impossible to shutdown notebooks from running tab in notebook>=6.0.0

[mpacer]

When going to /tree#running there is a listing of notebooks as well as a shutdown button for each notebook

if I click Shutdown it should send a DELETE request & get back a 204 No Content response from the sessions API. Removing the notebooks session from the listing

As of notebook>=6.0.0 clicking the shutdown Button doesn't even trigger the request to the sessions API. As a result it is impossible to shut down notebooks from the Running tab.

This works in 5.7.8 and so would be a regression.

[dbrucknr]

I noticed this issue as well.

I'm not an experienced developer, but I was poking around in the source files for anaconda and discovered three files that looked promising:

/anaconda3/bin/launch_instance
/anaconda3/bin/list_instances
/anaconda3/bin/kill_instance

Since this issue is open, can anyone verify whether these files are relevant to a resolution?
*Edit - I think these files may be related to launching an EC2 Instance.

[jacksonloper]

This is indeed broken on, e.g. the docker image jupyter/datascience-notebook with sha sha256:b67b73237f92c5207c03cc758d8ebb0de281e33fc0c6836c1c6afe27950d3f72 running Chrome 78.0.3904.108 (Official Build) (64-bit) on Ubuntu.

[rgbkrk]

Is this the same as #4865, which was fixed in #4939?

[mpacer]

Fantastic, great catch @rgbkrk!