Odd Gumball-by-Object behaviour when selecting CP rows

Serengeti (Rhino WIP)
1

Odd Gumball-by-Object behaviour when selecting CP rows. It’s been happening for some time in WIP–

Selecting one point previews correctly:

image
image1920×1206 158 KB

Window selecting a group of points also works:

image
image1920×1200 175 KB

Double-clicking rows sets the Gumball incorrectly to something else, not to the CPs:

image
image1920×1206 202 KB

To set the GB to the CPs, you need to deselect a point and the GB displays correctly:

image
image1920×1199 174 KB

System:

Rhino 9 SR0 2026-5-12 (Rhino WIP, 9.0.26132.12305, Git hash:master @ e4ca4a25a2667146cdb0b9e48607c637ec745bdb)
License type: Commercial, build 2026-05-12
License details: Cloud Zoo
Expires on: 2026-06-26

Windows 11 (10.0.26200 SR0.0) or greater (Physical RAM: 32GB)
.NET 10.0.8

Computer platform: LAPTOP - Plugged in [96% battery remaining]

Hybrid graphics configuration using DirectX
Primary display: NVIDIA RTX A1000 Laptop GPU (NVidia) Memory: 4GB, Driver date: 4-23-2026 (M-D-Y).
> Integrated accelerated graphics device (shares primary device ports)
- Laptop’s primary display device

Secondary graphics devices.
Intel(R) Iris(R) Xe Graphics (Intel) Memory: 2GB, Driver date: 1-15-2026 (M-D-Y).
> Integrated graphics device with 4 adapter port(s)
- Windows Main Display is laptop’s integrated screen or built-in port

DirectX Settings
Safe mode: Off

OpenBLAS: OpenBLAS 0.3.30 DYNAMIC_ARCH NO_AFFINITY Haswell MAX_THREADS=64.

Rhino plugins that do not ship with Rhino
C:\Program Files\Common Files\McNeel\Rhinoceros\7.0\Plug-ins\KeyShotRhinoPlugin (78243fe3-17a0-4865-b713-88b4c224c48c)\1.5.0.0\KeyShotRhinoPlugin\KeyShotRhinoPlugin.rhp “KeyShotRhinoPlugin” 1.0.0.0

Rhino plugins that ship with Rhino
C:\Program Files\Rhino 9 WIP\Plug-ins\Commands.rhp “Commands” 9.0.26132.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino 9 WIP\Plug-ins\UpdatesAndStatistics\UpdatesAndStatistics.rhp “UpdatesAndStatistics” 9.0.26132.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\RhinoRenderCycles.rhp “Rhino Render” 9.0.26132.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 9.0.26132.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Program Files\Rhino 9 WIP\Plug-ins\MeshCommands.rhp “MeshCommands” 9.0.26132.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\RhinoCycles.rhp “RhinoCycles” 9.0.26132.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\3dxrhino.rhp “3Dconnexion 3D Mouse”
C:\Program Files\Rhino 9 WIP\Plug-ins\Displacement.rhp “Displacement”
C:\Program Files\Rhino 9 WIP\Plug-ins\Calc.rhp “Calc”
C:\Program Files\Rhino 9 WIP\Plug-ins\SectionTools.rhp “SectionTools”

3

Hi, any thoughts?

Thanks

4

Hi @wim
Are you able to assist with this?
Thanks

5

Hi,

Sorry for being slow to respond. I’m having a hard time reproducing this. If I double click a row in one direction then shift over and double click a row in the different direction the gumball behaves how I’d expect.

The only time I see the gumball get out of UVN mode is when the surface is accidentally selected when trying to double click the control polygon. Can you share more specific instructions that will reproduce this every time? Once I can reproduce the bug then I can fix it.

6

Thanks @Joshua_Kennedy

I described the steps above each image in the first post. Fundamentally, in Gumball Object mode, when I double-click a CP row, the gumball does not align to the UVN.

If I pre-select one point then double click on the row, the GB displays in UVN mode as expected.

Could there be something in my Gumball settings causing this?

Thanks