Sleep (After Backlight Off) option

[Eduard Kutuev via rockbox-dev]

Is Settings - General Settings - Display - LCD Settings - Sleep (After 
Backlight Off) option used by anyone? It keeps touchscreen work after backlight 
is off. Why does it have default setting to 10s instead of Always?
It looks like a very annoying bug for users who don’t suppose there’s such an 
option.