I saw it on the sleep to wake screen. But I am not seeing it now.
But booting in for the first time i see the letters of the password appearing one at a time (the latest last letter). The last letter stays permanently even after pressing enter to log in. I tried changing the theme to something else. It still shows up.
I am not sure whether developers has plans to stop this as this to me is a slight security issue. Because I have not seen this in any other distro. I am using KDE Neon in another partition which is not showing this.
Thanks for your response.