https://www.jwz.org/xscreensaver/faq.html#typeahead
• I used to be able to start typing my password before the unlock
dialog had appeared, but now I have to wait for the prompt.
This is an inevitable consequence of the new security model introduced in
XScreenSaver 6.00. The old behavior will not be returning, so get used to
clicking the mouse or tapping "Shift" before you start typing your password.
Just typing blindly had always been bad opsec anyway: if the screen was only
blanked but not locked, you probably would have accidentally typed part of your
password into another window.
