There is a bug in cuba-studio (SE v6.10.2 tested) with adding attribute to screens on entity update.
- Create Entity with few attributes.
- Create browse/edit for entity.
- Create multiple fieldGroups in entity.edit screen and distribute attributes to them.
- Add new attribute to entity, upon save you are asked to which fieldGroup/table it should be assigned. Pick any other than first one.
- Check entity.edit screen - property is added to first fieldGroup instead of selected one.