I can confirm this problem persists regardless of when using xscreensaver or when using gnome-screensaver (running xscreensaver-lock, I cannot see the unlock dialog box, but if I type my password correctly, I can return to the desktop).
I can confirm this problem persists regardless of when using xscreensaver or when using gnome-screensaver (running xscreensaver-lock, I cannot see the unlock dialog box, but if I type my password correctly, I can return to the desktop).