diff --git a/lib/process-services-cloud/src/lib/task/start-task/components/people-cloud/people-cloud.component.spec.ts b/lib/process-services-cloud/src/lib/task/start-task/components/people-cloud/people-cloud.component.spec.ts
index 74e646b589..836678ba92 100644
--- a/lib/process-services-cloud/src/lib/task/start-task/components/people-cloud/people-cloud.component.spec.ts
+++ b/lib/process-services-cloud/src/lib/task/start-task/components/people-cloud/people-cloud.component.spec.ts
@@ -23,6 +23,7 @@ import { LogService, setupTestBed, IdentityUserService, IdentityUserModel } from
 import { mockUsers } from '../../mock/user-cloud.mock';
 import { of } from 'rxjs';
 import { ProcessServiceCloudTestingModule } from '../../../../testing/process-service-cloud.testing.module';
+import { SimpleChange } from '@angular/core';
 
 describe('PeopleCloudComponent', () => {
     let component: PeopleCloudComponent;
@@ -318,9 +319,9 @@ describe('PeopleCloudComponent', () => {
 
     it('should not validate preselect values if preselectValidation flag is set to false', () => {
         component.mode = 'multiple';
-        component.validate = false;
         component.preSelectUsers = <any> [{ id: mockUsers[1].id }, { id: mockUsers[2].id }];
-        fixture.detectChanges();
+        let change = new SimpleChange(null, 'validate', false);
+        component.ngOnChanges({'validate': change});
         fixture.whenStable().then(() => {
             fixture.detectChanges();
             expect(component.validatePreselectUsers).not.toHaveBeenCalled();
diff --git a/lib/process-services-cloud/src/lib/task/start-task/components/people-cloud/people-cloud.component.ts b/lib/process-services-cloud/src/lib/task/start-task/components/people-cloud/people-cloud.component.ts
index fce6477b0e..5fc1b99349 100644
--- a/lib/process-services-cloud/src/lib/task/start-task/components/people-cloud/people-cloud.component.ts
+++ b/lib/process-services-cloud/src/lib/task/start-task/components/people-cloud/people-cloud.component.ts
@@ -103,13 +103,10 @@ export class PeopleCloudComponent implements OnInit, OnChanges {
     invalidUsers: IdentityUserModel[];
 
     constructor(private identityUserService: IdentityUserService, private logService: LogService) {
-        this.searchUsersSubject = new BehaviorSubject<IdentityUserModel[]>(this._searchUsers);
-        this.searchUsers$ = this.searchUsersSubject.asObservable();
     }
 
     ngOnInit() {
-        this.selectedUsersSubject = new BehaviorSubject<IdentityUserModel[]>(this.preSelectUsers);
-        this.selectedUsers$ = this.selectedUsersSubject.asObservable();
+        this.initSubjects();
         this.initSearch();
 
         if (this.appName) {
@@ -119,6 +116,8 @@ export class PeopleCloudComponent implements OnInit, OnChanges {
     }
 
     ngOnChanges(changes: SimpleChanges) {
+        this.initSubjects();
+
         if (this.isPreselectedUserChanged(changes) && this.isValidationEnabled()) {
             this.loadPreSelectUsers();
         } else {
@@ -133,6 +132,18 @@ export class PeopleCloudComponent implements OnInit, OnChanges {
         }
     }
 
+    initSubjects() {
+        if (this.selectedUsersSubject === undefined) {
+            this.selectedUsersSubject = new BehaviorSubject<IdentityUserModel[]>(this.preSelectUsers);
+            this.selectedUsers$ = this.selectedUsersSubject.asObservable();
+        }
+
+        if (this.searchUsersSubject === undefined) {
+            this.searchUsersSubject = new BehaviorSubject<IdentityUserModel[]>(this._searchUsers);
+            this.searchUsers$ = this.searchUsersSubject.asObservable();
+        }
+    }
+
     private isAppNameChanged(change) {
         return change.previousValue !== change.currentValue && this.appName && this.appName.length > 0;
     }