Fix count of tasks on the status page

[MAILPOET-4664]

mailpoet/lib/Newsletter/Sending/ScheduledTasksRepository.php

@@ -218,11 +218,12 @@ class ScheduledTasksRepository extends Repository {
     ],
     $limit = Scheduler::TASK_BATCH_SIZE
   ) {
-
+    $result = [];
+    foreach ($statuses as $status) {
       $tasksQuery = $this->doctrineRepository->createQueryBuilder('st')
         ->select('st')
         ->where('st.deletedAt IS NULL')
-      ->where('st.status IN (:statuses)');
+        ->where('st.status = :status');
 
       if (in_array(ScheduledTaskEntity::VIRTUAL_STATUS_RUNNING, $statuses)) {
         $tasksQuery = $tasksQuery->orWhere('st.status IS NULL');
@@ -233,11 +234,15 @@ class ScheduledTasksRepository extends Repository {
           ->setParameter('type', $type);
       }
 
-    return $tasksQuery
-      ->setParameter('statuses', $statuses)
+      $tasks = $tasksQuery
+        ->setParameter('status', $status)
         ->setMaxResults($limit)
         ->getQuery()
         ->getResult();
+      $result = array_merge($result, $tasks);
+    }
+
+    return $result;
   }
 
   /**