My organizations seems to have a problem with the new Edge and SSO.
We have our extranet site published through ADFS+WAP, SSO works fine on the older version of Edge and IE. But if I try the new Edge it keeps asking for credentials.
I have already made sure that the correct WIA agent for the new Edge (Edg/79.0.309.43 and Edg/*) is added to our ADFS.
The devices are enrolled through intune and have a connection to Azure AD through the Work or school account option.
SSO does work fine for portal.office.com and web apps published through Azure enterprise applications.