You turned on the display of hidden lines in a view, but when you zoom out, the hidden lines disappear.
Issue: This issue may occur, for example, when viewing a 3D view with many hidden lines. When you zoom out, the hidden lines become too small to view correctly at that scale.
In addition, when the model hosts a linked model, you cannot display hidden lines in the linked model.
Solution: Zoom in to see the hidden lines. When you print the view, the hidden lines will print correctly, even when the view is zoomed out.