Running Windows 10 [CURRENT VERSION]
Microsoft Edge 41.16273.1000.0
Microsoft EdgeHTML 16.16273
No problems logging in with the current version of Edge.
There was never an issue with Firefox, Chrome, Safari, Opera.
The issue seems to be reliant on which version of Microsoft Edge you are running (is your version outdated?). There is definitely an issue that seems to be related to something Microsoft is changing with their HTML tinkering within Internet Explorer and Edge browsers.
At the time of this post, 4% of users are IE/Edge users. There is a small percentage of that minority who are not running a current version of Windows. And then there is an even smaller percentage of that small group who are visiting UBB.threads forums.
http://gs.statcounter.com/browser-market-shareIt's a known issue, but not something I've been able to reliably duplicate recently on Microsoft's legacy Internet Explorer 11 browser, or the current version of Edge. So whatever the issue is, either Microsoft has fixed it, or they dont know that they have, because there was never an issue with Firefox, Chrome, Safari, Opera.