defect
critical
#29468
A form's editing buffer is not a TLFormObjectBase, so identity-based constraints reject every edit
FormValidationModel hands ConstraintCheck the editing buffer (TLObjectOverlay) instead of the object. TLObjectOverlay does not implement TLFormObjectBase, so identity-comparing checks treat the edited object as a stranger. UniqueNameConstraint finds the object's own record and reports conflict with itself. Affects 8.0.0-alpha7. Every identity-aware check fails in React forms while working in legacy forms.