I have reported this already but have been told it’s not necessarily a bug or an issue!
This problem is present in V10 onwards but was perfectly OK up until then.
If you have a construction line added to a wall to extend the placement zone, the entire placement zone shows up on the elevation as a wall. This is NOT an accurate depiction of the area and is definitely a bug (ex Director of a software development company here so please 20-20 tech support do not argue the point).
The only current workaround is to use a wall opening added to the construction line.
Since the purpose of construction lines is to ‘hide’ walls for creating elevations of islands etc, then this is a problem.