Can't create a second sample - Extracting data.... never completes

[Dusty]

I'm using the latest build of the docker container.
https://hub.docker.com/r/scrapinghub/portia/

I can create a spider and a first sample. But after that, I can't verify the sample extraction because when I visit other pages "Extracted items" Extracting data.... Section never loads.

That also means, I can't create a New sample either.

This is a pretty big road block for me as the sites that I'm trying to scrape have a few different template types. It's also hindering my ability to verify that the annotations that I selected are working correctly.

I've seen this behavior on:
Engadget.com
Gizmodo.com
Undark.org
laughingsquid.com