When an optional ezobjectrelationlist attribute is used as object name, with an other mandatory attribute as fallback, this ezobjectrelationlist attribute is used as name even if empty (no-relation), resulting to an "empty object name".

A simple fix, in kernel/classesdatatypes/ezobjectrelationlist/ezobjectrelationlisttype.php (line 1597 on 4.4.0), would be to replace :

return false;

by :

return '';

Steps to reproduce

• Create a new class

• Set 2 attributes:
  .object_relation: Object relations datatype (and don't set it "required")
  .fallback_name: Text line datatype
• Set name model to <object_relation|fallback_name>

• Create an object of this class

• Let the object_relation attribute empty
• Set fallback_name to "Test"
  -> Pushished object should be named "Test" but is named "" instead