It turns out that `DepsgraphNodeBuilder::build_object_data_geometry(Object *object, bool is_object_visible)` was called for the custom shape with `is_object_visible=false` when there are drivers, and `is_object_visible=true` when there aren't any.
It turns out that `DepsgraphNodeBuilder::build_object_data_geometry(Object *object, bool is_object_visible)` was called for the custom shape with `is_object_visible=false` when there are drivers, and `is_object_visible=true` when there aren't any.