Safari 26.1 and AOL/Yahoo Webmail programs issue
I have a new MacBook Pro with Tahoe 26.1 installed. When trying to sign in to Webmail AOL Mail & Yahoo Mail I get an error message that says "Something Went Wrong" and will not let me go any further. This only happens in Safari. I am able to use the Apple mail program and Firefox without any issues. I have cleared the history and don't have any extensions loaded. I tried it in a standard Safari window as well as a private window and got the same results.
I have rebooted the computer as well. I have a keychain password on all of my email accounts. I tried adding a passcode and got the same results. I can access these accounts on my iPhone with iOS 18.7.2 as well as my Windows computer. It seems to be a Safari incompatibilty issue with AOL and Yahoo Webmail. I never had these issues with my 2017 MacBook Pro so again it seems to be a Safari 26.1 issue.
MacBook Pro 14″, macOS 26.1