Cayenne version: 4.1.M2-SNAPSHOT.
1. Create a new ObjEntity
2. Don't enter the Table/View field in the Entity tab
3. Create new attribute
4. Create new Relationship
5. Select a new Relationship and press "edit" button
Actual result: a new popup window doesn't open with the possibility to edit the data.
Expected result: a new popup window is opened. User can edit all information.