-current installer blown up defeated by Shift+PgUp

I run installer. After login as root I tried to scroll up terminal with shift+PgUp - it scrolled but afterthat installer stopped to respond. Like locked input - none of combinations of keys worked. Had to switch off power. Computer is Lenovo ThinkPad T430. -current was updated 10-th June. I have used mini-install iso image from AlienBob script. For sure I dd'ed image on two different pen-drives. At night I will update -current - will create iso again, and I will pick up torrent from external source, maybe image I created is broken, will see. Nice if somone would try to confirm.