Views Disapear After Refreshing Jupyter Notebook

[rmorshea]

This was actually intentional, but should really be a temporary solutions since it's rather inconvenient. In short we did this because requesting a resource from a different origin must be successful otherwise future requests to that resource will be blocked by the browser.

So if you restarted your kernel and refreshed the notebook page your IDOM widget views would fail to display when you re-ran it because the pre-existing view attempted to connect to the IDOM webserver when it didn't exist yet.

To work around this we temporarily displayed a script that set document.idomServerExists = true so that views could check that flag before they displayed. This will be changed soon though.