Token renewal operation failed due to timeout [Edge and "autologon"]

[burns47]

I've run into a weird edge case that only happens under the following conditions:

1. Using Microsoft Edge
2. My user profile is logged in to Microsoft Edge (if I log out of edge and "Browse as Guest" the library works as expected. Note that if I "Browse as Guest" I get redirected to the microsoft login page; if not, it somehow logs me in automatically without a redirect).
3. I make an API call out to a resource listed in adalConfig.endpoints
4. And the AdalInterceptor attempts to retrieve a token for that resource

I get the following error:

ERROR Token renewal operation failed due to timeout

Also in the console is the following 404 (please note the undefined where the tenant should go):

https://autologon.microsoftazuread-sso.com/undefined/winauth/ssoprobe?client-request-id={{guid}}&_=1581434875172 404 (Not Found). If it helps, also appearing in this stack trace is the text window.__OldConvergedDssoNoninteractiveLogin_Core

Can someone shed some light on this please? Thanks