Our company 3D Scenes Web Apps are developed by WAB (Develper Edition). Its current version is 2.20
Our customers do not log in directly to our server, but we use "Single Sign On" and they login by active directory authentication, using Azure, and the login dialog box presents a choice - whether to login as a regular user, via azure, or directly into the portal server. Regular users login via azure.
After upgrading from WAb 2.17 to WAB 2.20, the "Single Sign On" does not function at all - the dialog box contains only the option to login directly into the portal server, which is NOT how a regular user should enter