The issue has to do with Chrome receiving the HTTP response, and the HTTP response is too big for it's buffer. So if we reduce the size of the response, Chrome will behave in a better fashion.
To reduce the size of the response, we can change the MWG block page which is used for authentication. To do this, navigate to Policy > Settings, and click edit for any of the block templates. On the Template Editor screen, find the "Authentication Required" block page template and remove the contents of this blockpage (at least for now).
Update Dec 8th - Create an empty collection
Some customers reported that the above workaround did not help. If you are using your own custom template collection, we will need to create an empty template collection. This can be done in four steps:
1. Create an "empty" template collection by clicking add next to the Collection dropdown, instead of OK and Edit:
2. Verify that the "empty" collection is selected:
3. Create an empty "Authentication Required" Template, and click OK: