I have problem with HTTP Auth with Kee 3 - it is not working anymore. Problem appeared after automatic upgrade from Kee 2.5 to KeeVault 3, and was resolved by removing KeeVault 3 and installing Kee 2.5 again.
Installation I have is at WIndows with Firefox 65.0.2 (64-bit). If I visit page which is using HTTP Auth, browser seems to be loading page forever. But in the webserver logs I see that server sends 401 Unauthorized to broeser, and browser immediately requests same page, etc. There are tens of such requests/responses every second. It is not possible to get authorization window at all (Kee windows neither browser’s HTTP Auth window).