(2019-07-23, 8:06)Lasse Deleuran Wrote: Either there are multiple parts lying on top of each other, or I have made an error in the renderer.
I can't see anything wrong in the part, or its subparts, that would create extra surfaces. The four trans window panes are created by using the same subfile four times, one for each pane. If there was something wrong, you ought to have the same error in all four.