Hello. I think I found a bug on slock.
If you're typing your password and gets a char wrong, you go and delete the char, then continue to type the pass and 'enter' to unlock the screen. All good, screen is blue all the time. Unless... you get the first char wrong. If you mistype the first char of your password and 'backspace' to delete it, the screen goes red even though you didn't 'enter' the wrong password. Thanks.
