BUG: Font changes when selecting text

Hopefully it’s clear from the screenshot. The font randomly changes when selecting the text within the text editor, this is a bit of a headache. I’m not entirely sure if the issue is with this particular font or with Rhino, but I haven’t seen a problem like this within any of the other software packages(Mostly illustrator, Photoshop and so on).

I’m running Version 6 SR13(6.13.19031.5531, 31-01-2019)

Hello - I’m checking on this, thanks - can you post or send me that DIN font?

@rheinason - thanks for the fonts - so far I do not see a problem here. Can you please make a file with text - ensure that it behaves badly and then send me that? Thanks,


Sure thing,

Attached. Text Changing Randomly issue.3dm (76.9 KB)

I recreated the bug on the home machine right away.


Rhino 6 SR13 2019-1-31 (Rhino 6, 6.13.19031.5531, Git hash:master @ ac8b9292dc95031d2b575d143268a63e738fe068)
License type: Educational, build 2019-01-31

Windows 10.0 SR0.0 or greater (Physical RAM: 32Gb)
Machine name: DESKTOP-V3CT79H

Non-hybrid graphics.
Primary display and OpenGL: NVIDIA GeForce GTX 1080 Ti (NVidia) Memory: 11GB, Driver date: 1-11-2019 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 417.71

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: 1-11-2019
Driver Version:
Maximum Texture size: 32768 x 32768
Z-Buffer depth: 24 bits
Maximum Viewport size: 32768 x 32768
Total Video Memory: 11 GB

Rhino plugins
C:\Program Files\Rhino 6\Plug-ins\Commands.rhp “Commands” 6.13.19031.5531
C:\Program Files\Rhino 6\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino 6\Plug-ins\RhinoScript.rhp “RhinoScript”
C:\Program Files\Rhino 6\Plug-ins\RPC.rhp “RPC”
C:\Program Files\Rhino 6\Plug-ins\RhinoBonusTools.rhp “Rhino Bonus Tools”
C:\Users\hbxma\AppData\Roaming\McNeel\Rhinoceros\6.0\Plug-ins\ColorPicker (336da4ab-03d3-42ca-b1fb-313bfd4c1157)\2018.2.5.819\ColorPicker.rhp “ColorPicker”
C:\Program Files\Rhino 6\Plug-ins\AnimationTools.rhp “AnimationTools”
C:\Program Files\Rhino 6\Plug-ins\Tibidabo\Tibidabo.rhp “Tibidabo”
C:\Program Files\Rhino 6\Plug-ins\RhinoRender.rhp “Rhino Render”
C:\Program Files\Rhino 6\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 6.13.19031.5531
C:\Program Files\Rhino 6\Plug-ins\rdk_ui.rhp “Renderer Development Kit UI”
C:\Program Files\Rhino 6\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Program Files\Rhino 6\Plug-ins\IronPython\RhinoDLR_Python.rhp “IronPython” 6.13.19031.5531
C:\Program Files\Rhino 6\Plug-ins\RhinoCycles.rhp “RhinoCycles” 6.13.19031.5531
C:\Program Files\Rhino 6\Plug-ins\Tibidabo\VisualARQ.rhp “VisualARQ”
C:\Users\hbxma\AppData\Local\Enscape\Bin64\Enscape.Rhino6.Plugin.dll “Enscape.Rhino.Plugin” 2.4.19022.1419
C:\Program Files\Rhino 6\Plug-ins\Grasshopper\GrasshopperPlugin.rhp “Grasshopper” 6.13.19031.5531
C:\Program Files\Rhino 6\Plug-ins\Toolbars\Toolbars.rhp “Toolbars” 6.13.19031.5531
C:\Program Files\Rhino 6\Plug-ins\3dxrhino.rhp “3Dconnexion 3D Mouse”
C:\Program Files\Rhino 6\Plug-ins\BlockEdit.rhp “BlockEdit” 6.13.19031.5531
C:\Program Files\Rhino 6\Plug-ins\Displacement.rhp “Displacement”

Ah, this looks like maybe the V6 “font family” bug. There are a couple of open items in the bugtracker on this which might apply:


Hello - can you please try, as a test, disabling VisualArq & Tibidabo & Enscape in Options > Plug-ins and then restart Rhino - same thing?


Yeah, I think you are right but it ain’t happening here in any recent build (12,13,14)


Disabling the plugins made no difference. I’ll have to check if I added OTF or TTF font format. Could that be a culprit?

CHECKED: It’s the OTF ones that are installed.

Possibly- I installed ttf here - if that is not what you have, please shout.



1 Like

Hm - so far my Rhino does not like the OTF ones at all…Nope, it does not display in the viewport. I guess the next test would be to swap yours out for the TTF ones…
@Alain - if you have any ideas… I’m spinning my wheels a bit here. Should Rhino be OK with OTF fonts?


Huh… They(the OTF ones) display and print fine here, it’s just this font switcheroo business that’s a bother. I’d much rather have the OTF ones installed, they have a fair few nice features when using them within Illustrator and the likes. Give me a few minutes and I’ll test with the TTF ones.

UPDATE: Changing to TTF made no discernible difference here, the switching is still present.

OK, thanks for testing. I’ve been switching builds like a mad man today, I’ll go back to the one you have.


Just tested with Gill Sans and I was able to recreate the error:

Attached: Text Changing Randomly issue_Gill Sans.3dm (69.2 KB)

Font family… Gill Sans MT and MT Condensed…

Hey Mitch - I assume you had a try…? do you see this problem at all?



Hi Pascal,
I see that here on an SR14 daily [both with and without load-protecting Tibidabo and VisualARQ]

I’ll make a new YT…

Thanks for confirming.

Funny how your example defaults to Arial, while mine to Gill Sans MT.

Well - it changes to Arial when I highlight the text in the edit box but when I deselect the text in the viewport and then select it once again, it shows Gill Sans MT.
Reported as RH-50733.