In some cases after building a front-wall with the same length as the wall behind it, the wall disappears when the floor is clicked in the view assistant.
This can be fixed with the following steps:
- Right-click on the room-length front-wall and select the Internal wall/platform settings in the context menu.
- Untick the Use in floor plan option and click OK.
The outer wall is now shown in the 3D view.
Related articles
Why is an article visible in the 3D view but not in the 2D view?