diff --git a/gui/admin-gui/src/main/java/com/evolveum/midpoint/gui/api/util/WebComponentUtil.java b/gui/admin-gui/src/main/java/com/evolveum/midpoint/gui/api/util/WebComponentUtil.java
index 00f98ffe614..17346f7efde 100644
--- a/gui/admin-gui/src/main/java/com/evolveum/midpoint/gui/api/util/WebComponentUtil.java
+++ b/gui/admin-gui/src/main/java/com/evolveum/midpoint/gui/api/util/WebComponentUtil.java
@@ -619,7 +619,7 @@ public static TaskType createSingleRecurrenceTask(String taskName, QName applica
 
         ObjectReferenceType ownerRef = new ObjectReferenceType();
         ownerRef.setOid(owner.getOid());
-        ownerRef.setType(owner.getUser().COMPLEX_TYPE);
+        ownerRef.setType(UserType.COMPLEX_TYPE);
         task.setOwnerRef(ownerRef);
 
         task.setBinding(TaskBindingType.LOOSE);
diff --git a/gui/admin-gui/src/main/java/com/evolveum/midpoint/gui/api/util/WebModelServiceUtils.java b/gui/admin-gui/src/main/java/com/evolveum/midpoint/gui/api/util/WebModelServiceUtils.java
index 6a5e3a4ce6d..6f5b378d8ce 100644
--- a/gui/admin-gui/src/main/java/com/evolveum/midpoint/gui/api/util/WebModelServiceUtils.java
+++ b/gui/admin-gui/src/main/java/com/evolveum/midpoint/gui/api/util/WebModelServiceUtils.java
@@ -16,6 +16,7 @@
 import java.util.Map;
 import java.util.TimeZone;
 
+import com.evolveum.midpoint.schema.*;
 import com.evolveum.midpoint.xml.ns._public.common.common_3.*;
 import org.apache.commons.lang.BooleanUtils;
 import org.apache.commons.lang.LocaleUtils;
@@ -42,10 +43,6 @@
 import com.evolveum.midpoint.prism.delta.ObjectDelta;
 import com.evolveum.midpoint.prism.path.ItemPath;
 import com.evolveum.midpoint.prism.query.ObjectQuery;
-import com.evolveum.midpoint.schema.GetOperationOptions;
-import com.evolveum.midpoint.schema.GetOperationOptionsBuilder;
-import com.evolveum.midpoint.schema.SchemaHelper;
-import com.evolveum.midpoint.schema.SelectorOptions;
 import com.evolveum.midpoint.schema.constants.SchemaConstants;
 import com.evolveum.midpoint.schema.result.OperationResult;
 import com.evolveum.midpoint.schema.util.ObjectTypeUtil;
@@ -184,11 +181,14 @@ public static String runTask(TaskType taskToRun, Task operationalTask, Operation
         try {
             ObjectDelta<TaskType> delta = DeltaFactory.Object.createAddDelta(taskToRun.asPrismObject());
             pageBase.getPrismContext().adopt(delta);
-            pageBase.getModelService().executeChanges(WebComponentUtil.createDeltaCollection(delta), null,
+            Collection<ObjectDeltaOperation<?>> deltaOperationRes = pageBase.getModelService().executeChanges(WebComponentUtil.createDeltaCollection(delta), null,
                     operationalTask, parentResult);
+            if (StringUtils.isEmpty(delta.getOid()) && deltaOperationRes != null && !deltaOperationRes.isEmpty()){
+                ObjectDeltaOperation deltaOperation = deltaOperationRes.iterator().next();
+                delta.setOid(deltaOperation.getObjectDelta().getOid());
+            }
             parentResult.recordInProgress();
             parentResult.setBackgroundTaskOid(delta.getOid());
-            pageBase.showResult(parentResult);
             return delta.getOid();
         } catch (ObjectAlreadyExistsException | ObjectNotFoundException | SchemaException
                 | ExpressionEvaluationException | CommunicationException | ConfigurationException
diff --git a/gui/admin-gui/src/main/java/com/evolveum/midpoint/web/page/self/PageAssignmentsList.java b/gui/admin-gui/src/main/java/com/evolveum/midpoint/web/page/self/PageAssignmentsList.java
index 5ceeccb8549..6ec73846f7c 100644
--- a/gui/admin-gui/src/main/java/com/evolveum/midpoint/web/page/self/PageAssignmentsList.java
+++ b/gui/admin-gui/src/main/java/com/evolveum/midpoint/web/page/self/PageAssignmentsList.java
@@ -339,13 +339,13 @@ private ModelExecuteOptions createOptions() {
     private void onMultiUserRequestPerformed(AjaxRequestTarget target) {
             OperationResult result = new OperationResult(OPERATION_REQUEST_ASSIGNMENTS);
             Task operationalTask = createSimpleTask(OPERATION_REQUEST_ASSIGNMENTS);
-
+            String executionTaskOid = null;
             try {
                 TaskType task = WebComponentUtil.createSingleRecurrenceTask(
                         createStringResource(OPERATION_REQUEST_ASSIGNMENTS).getString(),
                         UserType.COMPLEX_TYPE,
                         getTaskQuery(), prepareDelta(null, result), createOptions(), TaskCategory.EXECUTE_CHANGES, PageAssignmentsList.this);
-                WebModelServiceUtils.runTask(task, operationalTask, result, PageAssignmentsList.this);
+                executionTaskOid = WebModelServiceUtils.runTask(task, operationalTask, result, PageAssignmentsList.this);
             } catch (SchemaException e) {
                 result.recordFatalError(result.getOperation(), e);
                 result.setMessage(createStringResource("PageAssignmentsList.requestError").getString());
@@ -353,7 +353,7 @@ private void onMultiUserRequestPerformed(AjaxRequestTarget target) {
                         "Failed to execute operaton " + result.getOperation(), e);
                 target.add(getFeedbackPanel());
             }
-            if (hasBackgroundTaskOperation(result)) {
+            if (hasBackgroundTaskOperation(result) || StringUtils.isNotEmpty(executionTaskOid)) {
                 result.setMessage(createStringResource("PageAssignmentsList.requestInProgress").getString());
                 showResult(result);
                 clearStorage();