Fixed enum propertyField problems

Author: alelievr

Assets/com.alelievr.NodeGraphProcessor/Editor/Utils/ExposedParameterDrawer.cs

@@ -40,7 +40,6 @@ protected void ApplyModifiedProperties(SerializedProperty property)
         {
             property.serializedObject.ApplyModifiedProperties();
             property.serializedObject.Update();
-            property.serializedObject.ApplyModifiedProperties();
         }
     }
 

Assets/com.alelievr.NodeGraphProcessor/Editor/Views/ExposedParameterFieldFactory.cs

@@ -75,7 +75,9 @@ public VisualElement GetParameterSettingsField(ExposedParameter parameter, Actio
             serializedObject.Update();
             int propIndex = FindPropertyIndex(parameter);
             var serializedParameter = serializedParameters.GetArrayElementAtIndex(propIndex);
+            serializedParameter.managedReferenceValue = exposedParameterObject.parameters[propIndex];
             var serializedSettings = serializedParameter.FindPropertyRelative(nameof(ExposedParameter.settings));
+            serializedSettings.managedReferenceValue = exposedParameterObject.parameters[propIndex].settings;
             var settingsField = new PropertyField(serializedSettings);
             settingsField.Bind(serializedObject);