Can't scroll back with Shift+PageUp in TTY

[Yvan Masson <yvan@masson-informatique.fr>]

Hi list,

I just discover that Shift+PageUp and Shift+PageDown in TTY does not 
work on my Debian computers (1 running testing, one running stable, and 
2 VMs running stable). It works on another VM running CentOS 8. And it 
works on my testing box when inside gnome-terminal.

I could not find anything relevant on the net. Any idea how to get 
Shift+PageUp working again in TTY?

Regards,
Yvan