I’m still getting to grips with the new materials tray, so this may not be a bug, but I can’t find a setting that allows me to overcome the issue I’m experiencing.
I have created a new ‘glass’ material from the Glass_Basic_01 default material. I have renamed the new material and changed its colour. As I reduce the material’s opacity, it appears that the inner faces of the thumbnail become more visible. So, although the material renders correctly in the main window, its thumbnail is rendering incorrectly. The attached screen grab shows the issue - the material has a green tint in the main window (which is correct) but appears blue in the thumbnail image.
Can anyone help please?