Grasshopper Solid Union not working under Rhino 9 WIP and ok Rhino 8

I just realized that Rhino 9 does not perform Solid Union on my projects. Any idea if there is some option to adjust ay settings to get it working under Rhino 9 ? example attached…

Rhino 9 - rhino_9.0.26125.12305

Rhino 8 Version 8 SR30
(8.30.26103.11001, 2026-04-13)

solid-issue.gh (61.5 KB)

Seeing parity here, albeit 100ms slower.

Are the document tolerances different?

8.32.26131.18001
9.0.26132.00305

ok i reviewed and this is correct now, File - Properties - Units.

just new version is twice slower than older

Version 8 SR30
(8.30.26103.11001, 2026-04-13)

Work In Progress
(9.0.26125.12305, 2026-05-05)