Troubleshooting
Kart's stick continuously to their current geographical object. Transferring to new geography requires the beginning of a new object parallel to the old object or an aerial maneuver (ex. a jump).
Examples:
This first example should work as a wall since it is perpendicular enough. However, this is not the best practice and can result in unknown behaviour. In the second example, the kart will likely drive through the wall.
This approach to geography is the best practice.
Normally due to a triangle being too long. Try splitting the longest triangles into multiple triangles.
In blender press CTRL+A and click Apply Transformations. Experiment checking Apply Transform in export settings.
In-game example:
In-editor example:
Observe that two separate objects are overlapping each other. Solve this by adding more vertices to the objects and connecting the vertices together:
