Rhino 8 on Mac/Apple Another Metal Display Issue

Kia ora koutou

I have a class of >300 students starting in 3 days time and roughly 1/3rd of them use an Apple computer. I have a display problem that appears to be associated with the M1-3 chip Apple computers: it is the display of a screen-oriented legend within a particular Rhino window such as Perspective, top etc.

It is a result of using a particular display component within the LadyBug Tools (LBT)(https://www.ladybug.tools/) Grasshopper suite of building performance analysis components.

I have posted about it here: Visualization Set preview on Apple Computers - #14 by furtonb - ladybug-tools - Ladybug Tools | Forum

But, it seems this might actually be a Rhino 8 / Mac issue, not a LBT issue.

LBT v1.8, Rhino 8.9
The same grasshopper script produces on a Windows machine

And on an Apple machine

As you can see in the second image, the legend is actually being placed correctly in both systems as its text annotation is there in the same place, however the displayed coloured segments of the legend itself does not appear.