(This is VW2018)
The screenshot is from the attached file.
The model contains two objects: a wall object and a polygon object ('green gridline').
Section one cuts through the wall and the green gridline, and both show up as expected.
Section 2 cuts only through the green gridline. The wall shows in the background in elevation as expected but the green gridline does not appear at all. Why is this?
(File contains 2 saved views so you can look at the model and the sheet layer)