Hi. I'm glad to see the new video features in the beta releases! I'm working on a video right now and they come in handy.
I try my best to follow SketchUp modeling best practices, and this includes never applying materials to groups or components, only to faces, and only to front faces, not back faces. This has worked wonderfully with every single render software I've used until now... except Enscape. As you can see in the first image, Enscape is leaking SketchUp's default backface materials through the table's and chair's unsmoothed lines. In the second image, I copied each object's material and applied it at the group level (thus going against SketchUp best practices), and this "solves" the Enscape bug.
I understand why Enscape works this way: Most users work in a very sloppy way, and this suits them well. However, I wish there was an option for Enscape to not render (aka "cull"), backfaces when they have no material applied to them, that is, when they only have the default SketchUp material. This is the way Lumion works. And I hope Enscape can shave off a few miliseconds per frame by doing so. Why use system resources in something that won't be seen?
Keep up the good work!