4.20.3 Desire Max Draw Distance Problem

I found Two problem with Desire Max Draw Distance in 4.20.3

1.When I change the value from small to Big (Not 0 To Big) The Current Max Distance Not Change and In Game Cull Distance Not change

2.The Desire Max Draw Distance Unit Not centimeter But Decimeter

This happened like after Recently Reinstall 4.20.3 and I Test in 4.22 Has No Problem,I guess This is A Bug?Some One Can Help me Solve This Problem?

Thanks