fixes #30

controllers/dashboard.php

@@ -138,10 +138,7 @@ final class DashboardController extends TracToGitlab\Controller
         });
 
         return array_map(function ($issue) {
-            $mrs = [];
-            if ($issue['merge_requests_count'] > 0) {
             $mrs = $this->gitlab->issues()->relatedMergeRequests($this->gitlabProjectId, $issue['iid']);
-            }
             return new TracToGitlab\GitlabIssue($issue, $mrs);
         }, $issues);
     }

lib/GitlabIssue.php

@@ -59,8 +59,7 @@ final class GitlabIssue implements \JsonSerializable
 
     public function isMerged()
     {
-        return $this->hasMergeRequests()
-            && count(array_filter($this->mrs, function ($mr) {
+        return count(array_filter($this->mrs, function ($mr) {
             return $mr['state'] !== 'merged';
         })) === 0;
     }
@@ -116,7 +115,7 @@ final class GitlabIssue implements \JsonSerializable
             'assignee' => $this->assignee,
             'web_url' => $this->web_url,
             'closed' => $this->isClosed(),
-            'merge_requests' => $this->issue['merge_requests_count'],
+            'merge_requests' => count($this->mrs),
             'merged' => $this->isMerged(),
             'qm_states' => array_combine(
                 array_values(self::QM_LABEL_MAPPING),