V8 Block Definitions panel glitch

Hi All.

Found an issue on subject. Maybe it’s already known.
Block list is empty after block edit. After selection of any block the list is back.

Animation

Hi -

I’m not seeing that here.
Could you please provide your SystemInfo data?
-wim

Sure.

SysInfo

Rhino 8 SR0 2023-4-18 (Rhino WIP, 8.0.23108.14305, Git hash:master @ be7db2f4e3d7f64e6403bf46a8f308c540e8e2f5)
License type: Commercial, build 2023-04-18
License details: Stand-Alone
Expires on: 2023-06-02

Windows 10 (10.0.19044 SR0.0) or greater (Physical RAM: 32Gb)

Computer platform: DESKTOP

Standard graphics configuration.
Primary display and OpenGL: NVIDIA Quadro RTX 5000 (NVidia) Memory: 16GB, Driver date: 11-23-2022 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 527.27
> Accelerated graphics device with 4 adapter port(s)
- Windows Main Display attached to adapter port #0

Secondary graphics devices.
Intel(R) UHD Graphics 630 (Intel) Memory: 1GB, Driver date: 11-16-2022 (M-D-Y).
> Integrated graphics device with 3 adapter port(s)
- There are no monitors attached to this device!

OpenGL Settings
Safe mode: Off
Use accelerated hardware modes: On
Redraw scene when viewports are exposed: On
Graphics level being used: OpenGL 4.6 (primary GPU’s maximum)

Anti-alias mode: 4x
Mip Map Filtering: Linear
Anisotropic Filtering Mode: High

Vendor Name: NVIDIA Corporation
Render version: 4.6
Shading Language: 4.60 NVIDIA
Driver Date: 11-23-2022
Driver Version: 31.0.15.2727
Maximum Texture size: 32768 x 32768
Z-Buffer depth: 24 bits
Maximum Viewport size: 32768 x 32768
Total Video Memory: 16 GB

Rhino plugins that do not ship with Rhino
C:\Program Files\Rhino 6\Plug-ins\DATAKIT\Rhino6_Import_x64.rhp “Datakit_to_rhino6”
C:\Program Files\SimLab\Plugins\SimLab PDF From Rhino\SimLabPDFExporter.rhp “SimLab PDF Exporter”
C:\Program Files\Common Files\McNeel\Rhinoceros\8.0\Plug-ins\ClippingBox (4dfff1df-5f09-43ae-a044-77b115244b02)\1.0.0.0\Rhino 6\ClippingBox.rhp “ClippingBox” 1.0.0.0
C:\Users\Andrey\AppData\Roaming\McNeel\Rhinoceros\packages\7.0\Iris\0.7.1\Iris.V7.rhp “Iris” 1.0.0.0

Rhino plugins that ship with Rhino
C:\Program Files\Rhino 8 WIP\Plug-ins\Commands.rhp “Commands” 8.0.23108.14305
C:\Program Files\Rhino 8 WIP\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino 8 WIP\Plug-ins\RhinoRenderCycles.rhp “Rhino Render” 8.0.23108.14305
C:\Program Files\Rhino 8 WIP\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 8.0.23108.14305
C:\Program Files\Rhino 8 WIP\Plug-ins\rdk_ui.rhp “Renderer Development Kit UI”
C:\Program Files\Rhino 8 WIP\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Program Files\Rhino 8 WIP\Plug-ins\RhinoCycles.rhp “RhinoCycles” 8.0.23108.14305
C:\Program Files\Rhino 8 WIP\Plug-ins\RhinoCode\RhinoRoslyn.rhp “RhinoRoslyn” 8.0.23108.14305
C:\Program Files\Rhino 8 WIP\Plug-ins\RhinoCode\RhinoCodePlugin.rhp “RhinoCodePlugin” 8.0.23108.14305
C:\Program Files\Rhino 8 WIP\Plug-ins\RhinoCode\RhinoCPython.rhp “RhinoCPython” 8.0.23108.14305
C:\Program Files\Rhino 8 WIP\Plug-ins\Toolbars\Toolbars.rhp “Toolbars” 8.0.23108.14305
C:\Program Files\Rhino 8 WIP\Plug-ins\3dxrhino.rhp “3Dconnexion 3D Mouse”
C:\Program Files\Rhino 8 WIP\Plug-ins\BlockEdit.rhp “BlockEdit” 8.0.23108.14305
C:\Program Files\Rhino 8 WIP\Plug-ins\Displacement.rhp “Displacement”
C:\Program Files\Rhino 8 WIP\Plug-ins\ConstraintsUI.rhp “Constraints UI” 8.0.23108.14305
C:\Program Files\Rhino 8 WIP\Plug-ins\SectionTools.rhp “SectionTools”

If you start from empty file, add geometry and create a block with “+” on the panel, then this new block behaves as I described.

If close Block manager and open it again while have blocks in session - no list dropping.