I followed the sample code in the B2C tutorial to build an ASP.NET web app, which has been working fine for several weeks. About a week ago, the checkbox "Keep me signed in" on the AD sign in page stopped working. Whether you check it or not, you are always prompted to sign in after you've closed and reopened your browser. This behavior is the same across different browsers and devices (Chrome/IE/Edge in Windows and Chrome/Safari on iOS). I did not change any code. Has something changed on the AD side?
Thanks