Resolve "Fragebögen zu früh sichtbar"

app/controllers/questionnaire.php

@@ -622,7 +622,7 @@ class QuestionnaireController extends AuthenticatedController
             if ($one->isStopped() && $one->resultsVisible()) {
                 $stopped_visible++;
             }
-            if ($one->isStopped() && (!$one->resultsVisible() || !Request::get("questionnaire_showall"))) {
+            if (($one->isStopped() || !$one->isViewable()) && (!$one->resultsVisible() || !Request::get("questionnaire_showall"))) {
                 unset($this->questionnaire_data[$i]);
                 continue;
             }

lib/models/Questionnaire.php

@@ -85,6 +85,9 @@ class Questionnaire extends SimpleORMap implements PrivacyObject
         if ($this->isEditable()) {
             return true;
         }
+        if (!$this->isStarted()) {
+            return false;
+        }
         foreach ($this->assignments as $assignment) {
             if ($assignment['range_id'] === "public") {
                 return true;