Animations that block use input are the sort of stupidity that becomes evil in its own regard. There was even a calculator but with this. This is a massive failure at the management level; somebody actually codes these things, but that it's not caught anywhere before shipping shows that the wrong people are in charge.
Don't make your user repeat something twice :)
I do not log-in frequently enough to remember how it behaves on log-in (even my laptop has ~90 days of uptime).
FWIW, moving away from GNOME 2.x to either Unity or GNOME 3 was a hard move to swallow, though in all honesty, Unity was better (though pretty buggy and laggy until the end)!
Now when it is gone, I'm using xfce, which seems be the last decent desktop environment.
Besides waiting for animation, in Windows 10, if you type the password fast enough the first character gets selected and the second character you type will replace it.
This happens frequently.