Dim model space scale not working on Rhino8

Can’t seem to get model space scaling to work on Rhino8. Is this a bug?

Version 8 SR3 (8.3.24009.15001, 2024-01-09)

Rhino_nWw2RxBIAZ

Version 7 SR23 (7.23.22282.13001, 2022-10-09)

Rhino_u3EYh47VC7