The most common reason for this is that the geometry is very far from the project origin. This causes the graphical representation of the elements to become less reliable and less accurate.
- How to set up coordinates in Revit
- Revit - About the Maximum Distance Limit
- Archicad - Far From Origin
There is now a partial solution to this issue in the Service, which means that if the model is on our planet, it should display correctly. If the problem persists, please contact support.