I came here to post the same issue. It is incredibly annoying that my password manager fills in the fields yet the login button is still disabled. This could easily be fixed by not requiring the password field to be Touched, but only requiring it to be non empty. Subtle difference but effective.
Also, recently I've been having more trouble than usual logging in. Usually my password manager fills in the form and then I have to add and delete a space to activate the login button. This isn't working reliably anymore and also at the moment, even if I reload the page and type everything manually, the login button is still inactive, meaning I'm completely unable to log in.
In addition, the client is booting me out and making me log back in very frequently. This is a recent issue as of the last 2-3 days or so.