The Reference widget prevent the selection of an ancestor of self in a ReferenceWidget. This true for the dropDown candidates and for the modal selection. This use case should not be prevented. For example with this use case, we should be able to select an Entity2 ancestor of Entity1 in the linkedTo feature.

ADA_RefWidgetAncestorProblem.zip
ADA_RefWidgetAncestorProblemInstance.zip