Just installed test 3 and you still lose the cursor on the firstboot
screen. The workaround is to change to terminal 1 and then back to
terminal 7 and the mouse works again.
This was a clean install of test 3 on an IBM T30 thinkpad.
I'll update the bug in bugzilla.
This is definitely a showstopper for new users as they will have no
idea to switch terminals.