Error 404 in Portal -

When using Engine API, once a case is created using an userId (different from the session userId), Bonita Portal is Broken:

Sample Code (Start New Process Instance):
String username = "walter.bates";
String password = "bpm";
LoginAPI loginAPI = TenantAPIAccessor.getLoginAPI();
APISession apiSession = loginAPI.login(username, password);
ProcessInstance p = TenantAPIAccessor.getProcessAPI(apiSession).startProcess(7L, 6673751338502244567L);

Sample Code (Execute User Task)
LoginAPI loginAPI = TenantAPIAccessor.getLoginAPI();
APISession apiSession = loginAPI.login(username, password);

Map<String,Serializable> instantiationInputs = new HashMap<String,Serializable>();
instantiationInputs.put("caseId", 0);
instantiationInputs.put("taskName", "test");

TenantAPIAccessor.getProcessAPI(apiSession).executeUserTask(7L, this.selectedTask.getId(), instantiationInputs);

A case created with Walter Bates session for virginie.jomphe works fine with virginie.jomphe Bonita Portal but when you try to view it with walter.bates the following error occurs:

In the same situation, cannot add Comments to the Pending and Assigned Tasks:
"The case is archived. You cannot add comments anymore"

Affected functionalities in Portal:

• Cases (Open and Archived)

• Administration (Process/Status)

• Cannot access to overview pages.

URL Example
/bonita/API/bpm/case/5?d=started_by&d=startedBySubstitute&d=processDefinitionId&d=processDefinitionId