@dave r said:
I did miss that. What happens if you turn off Auto Render in LO?
Auto Render in LayOut isn't really the right answer to the problem. If you simply switch to a different style in SketchUp, or "reload" the style you're on, the temporary style changes are forgotten and you're good to go.
It's just that if you make temporary changes to the style, and save your model as-is, you'll get into trouble. It's a good trap for people who don't know what's happening. Because once you open SketchUp again to check your model, your first instinct is to go click on the style to make sure the settings are correct, and sure enough, they will be. So it's confusing.