Thanks, the feedback is good. However it would help if you could be much more specific *each* time you report an issue. When you say "Shader preview display (enabled vs. disabled), where specifically are you seeing it change? The Image Map Shader you're referring to doesn't have that option, so it can't be that. So which shader were you referring to? Or did you mean the overall display preference ("Turn all preview bounding boxes off" on the Gear button at the bottom of the Object list)? Basically, each time you report an issue please tell exactly where it occurs and in what specific shader or other part of the interface. If you mention the "preview", indicate whether it's the main 3D preview, a preview in a new window, the small shader preview next to the node lists, or something else.
The bottom line is I am so far unable to reproduce any of this and I'm hoping that more specific instructions will let me do so, which we can then troubleshoot and hopefully resolve. For the moment I have no idea what's going on.
- Oshyan