Hi Guys, it is a known bug in SU. It is also noticeable when you use images with transparent parts although then the method to paint the back face seems to help. I am also "investigating" this for a proper bug report. It doesn't seem to always behave the same way - I for instance have a model of a church and when I look through the windows, all the opposite walls are "transparent" (like in your image) but the pillars (nested components) inside, supporting the vaulting, are not. Yes,definitely annoying. If you don't mind,I am moving this topic to the Sketchup > Bug reports subforum.