Annoying topmost window on PRIMARY screen

Attempting to assign a material to a layer can create two, permanent, black squares on one (or more) otherwise invisible topmost windows. Note: the topmost window will capture mouse clicks and will bring Rhino to the top of the zorder. It is bigger than the visible rectangles.

To recreate:

have two or more screens with desktop extended across them - my primary monitor is 1080p and sits to the right of the secondary - the secondary is 4k

make sure your main monitor’s background is sufficiently not-black so so you can see black squares when they appear

open rhino (you don’t need to create a file)

move rhino to the secondary monitor and maximize it (not sure if that is necessary, just do it)

select layer panel and click on the circle that displays the dialog that assigns a material to a layer

the dialog is displayed and things are still fine

drop down the material selector, uh, dropdown

you will see the first black box appear somewhere over the top right quadrant of your main monitor

select create new material, pick a type of material

the second black box appears

Finished how to recreate

These rectangles last the life of your rhino app. If you have more than one rhino running then I think you have to close them all to get rid of the rectangles.

Please see the, somewhat meta, screen cap below.

The evil influence of the black rectangles extends beyond their visible regions but doesn’t occupy the entire top quadrant of the screen. For example: I can successfully click the search icon but clicking over the number 27 will cause rhino to come to the top of the z order and the click will not reach the browser.

Upon reflection, this could be a renderer plugin problem, what’s the fastest way for me to provide the list of plugins I have (if you can’t just recreate this yourself)?

DOH, I’m such a dumbass, the black rectangles appear on the PRIMARY screen.

My title contained error, must sterilize…

If you are using Rhino 6 run the Rhino SystemInfo command and post the results here.

Rhino 6 SR16 2019-7-9 (Rhino 6, 6.16.19190.07001, Git hash:master @ a8b4ee102e9e0eb1d11825df063e13f96d518f93)
License type: Commercial, build 2019-07-09
License details: Cloud Zoo. In use by: John McAuley ()

Windows 10.0 SR0.0 or greater (Physical RAM: 16Gb)
Machine name: Nigel

Non-hybrid graphics.
Primary display and OpenGL: NVIDIA Quadro P6000 (NVidia) Memory: 24GB, Driver date: 3-17-2019 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 419.67

OpenGL Settings
Safe mode: Off
Use accelerated hardware modes: On
Redraw scene when viewports are exposed: On

Anti-alias mode: 8x
Mip Map Filtering: Linear
Anisotropic Filtering Mode: Height

Vendor Name: NVIDIA Corporation
Render version: 4.6
Shading Language: 4.60 NVIDIA
Driver Date: 3-17-2019
Driver Version:
Maximum Texture size: 32768 x 32768
Z-Buffer depth: 24 bits
Maximum Viewport size: 32768 x 32768
Total Video Memory: 24 GB

Rhino plugins
C:\Program Files\Rhino 6\Plug-ins\Commands.rhp “Commands” 6.16.19190.7001
C:\Program Files\XirusCAD\\v6\Xirus.rhp “XirusCAD”
C:\Program Files\Rhino 6\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino 6\Plug-ins\AnimationTools.rhp “AnimationTools”
C:\Program Files\Rhino 6\Plug-ins\RhinoRender.rhp “Rhino Render”
C:\Program Files\Rhino 6\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 6.16.19190.7001
C:\Program Files\Rhino 6\Plug-ins\rdk_ui.rhp “Renderer Development Kit UI”
C:\Program Files\Common Files\McNeel\Rhinoceros\6.0\Plug-ins\Iray (6ac73cf3-0a75-45a4-a5a1-89e40bc53c4b)\1.5.376.0\6\IrayRhino.Plugin.rhp “Iray” 1.5.376.0
C:\Users\Shepard\AppData\Roaming\McNeel\Rhinoceros\6.0\Plug-ins\PanelingTools (6caed836-bc06-4ebc-b1fd-e10886a0dc94)\2018.10.11.800\PanelingTools.rhp “PanelingTools”
C:\Program Files\Rhino 6\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Users\Shepard\AppData\Roaming\McNeel\Rhinoceros\6.0\Plug-ins\XNurbs (80be33b0-13b2-4ac4-9c77-03829214f9e9)\\XNurbsRhino.rhp “XNurbs”
C:\Program Files\Rhino 6\Plug-ins\RhinoCycles.rhp “RhinoCycles” 6.16.19190.7001
C:\Program Files\Rhino 6\Plug-ins\Toolbars\Toolbars.rhp “Toolbars” 6.16.19190.7001
C:\Program Files\Rhino 6\Plug-ins\3dxrhino.rhp “3Dconnexion 3D Mouse”
C:\Program Files\Chaos Group\V-Ray\V-Ray for Rhinoceros 6\VRayForRhino.rhp “V-Ray for Rhino”
C:\Program Files\Rhino 6\Plug-ins\Displacement.rhp “Displacement”