Topological naming problem
Summary
The FreeCAD wiki page explains the topological naming problem: how a shape’s internal names can change after modelling operations, breaking dependent features in workflows like PartDesign and TechDraw. It describes the underlying cause (OpenCASCADE topology handling), existing efforts (naming algorithm), a practical example of how face renaming can disrupt subsequent features, and recommended strategies (use of datum planes and planar sketches) to achieve more stable models.