MAGETWO-83270: 11700: "Something Went Wrong" error for limited access admin user magento#11993

Author: ishakhsuvarov

app/code/Magento/Ui/Controller/Adminhtml/Index/Render.php

@@ -127,7 +127,10 @@ private function validateAclResource($dataProviderConfigData)
     {
         if (isset($dataProviderConfigData['aclResource'])) {
             if (!$this->_authorization->isAllowed($dataProviderConfigData['aclResource'])) {
-                $this->_redirect('admin/denied');
+                if (!$this->_request->isAjax()) {
+                    $this->_redirect('admin/denied');
+                }
+
                 return false;
             }
         }

app/code/Magento/Ui/Test/Unit/Controller/Adminhtml/Index/RenderTest.php

@@ -279,6 +279,13 @@ public function testExecuteAjaxRequestWithoutPermissions(array $dataProviderConf
         $this->requestMock->expects($this->any())
             ->method('getParams')
             ->willReturn([]);
+        if ($isAllowed === false) {
+            $this->requestMock->expects($this->once())
+                ->method('isAjax')
+                ->willReturn(true);
+        }
+        $this->responseMock->expects($this->never())
+            ->method('setRedirect');
         $this->responseMock->expects($this->any())
             ->method('appendBody')
             ->with($renderedData);