Stunner - It's not possible to delete case role

Create a Case project. Create a Case Definition. Open Case Management in Properties panel and add new Case Roles: owner : 1 manager : 1 supplier : 2 Save, close and open the case back. Remove supplier from the Case Roles, save the changes, close the case and open it again. Navigate to the Case Management and check roles. Actual result Case Role contains three items including previously deleted one ( supplier ): owner : 1 manager : 1 supplier : 2 Expected result Case Role contains only two items excluding previously deleted one ( supplier ): owner : 1 manager : 1 The Roles should never contain items that were previously deleted.