diff --git a/lib/questionlib.php b/lib/questionlib.php
index 61764ed59ea..22fa4f711e2 100644
--- a/lib/questionlib.php
+++ b/lib/questionlib.php
@@ -921,8 +921,6 @@ function question_load_questions($questionids, $extrafields = '', $join = '') {
  * @param stdClass[]|null $filtercourses The courses to filter the course tags by.
  */
 function _tidy_question($question, $category, array $tagobjects = null, array $filtercourses = null) {
-    global $CFG;
-
     // Load question-type specific fields.
     if (!question_bank::is_qtype_installed($question->qtype)) {
         $question->questiontext = html_writer::tag('p', get_string('warningmissingtype',
@@ -1651,25 +1649,44 @@ class context_to_string_translator{
 /**
  * Check capability on category
  *
- * @param mixed $questionorid object or id. If an object is passed, it should include ->contextid and ->createdby.
+ * @param int|stdClass $questionorid object or id. If an object is passed, it should include ->contextid and ->createdby.
  * @param string $cap 'add', 'edit', 'view', 'use', 'move' or 'tag'.
- * @param integer $notused no longer used.
- * @return boolean this user has the capability $cap for this question $question?
+ * @param int $notused no longer used.
+ * @return bool this user has the capability $cap for this question $question?
+ * @throws coding_exception
  */
 function question_has_capability_on($questionorid, $cap, $notused = -1) {
-    global $USER;
+    global $USER, $DB;
 
     if (is_numeric($questionorid)) {
-        $question = question_bank::load_question_data((int)$questionorid);
+        $questionid = (int)$questionorid;
     } else if (is_object($questionorid)) {
+        // All we really need in this function is the contextid and author of the question.
+        // We won't bother fetching other details of the question if these 2 fields are provided.
         if (isset($questionorid->contextid) && isset($questionorid->createdby)) {
             $question = $questionorid;
+        } else if (!empty($questionorid->id)) {
+            $questionid = $questionorid->id;
         }
+    }
 
-        if (!isset($question) && isset($questionorid->id) && $questionorid->id != 0) {
-            $question = question_bank::load_question_data($questionorid->id);
+    // At this point, either $question or $questionid is expected to be set.
+    if (isset($questionid)) {
+        try {
+            $question = question_bank::load_question_data($questionid);
+        } catch (Exception $e) {
+            // Let's log the exception for future debugging.
+            debugging($e->getMessage(), DEBUG_NORMAL, $e->getTrace());
+
+            // Well, at least we tried. Seems that we really have to read from DB.
+            $question = $DB->get_record_sql('SELECT q.id, q.createdby, qc.contextid
+                                               FROM {question} q
+                                               JOIN {question_categories} qc ON q.category = qc.id
+                                              WHERE q.id = :id', ['id' => $questionid]);
         }
-    } else {
+    }
+
+    if (!isset($question)) {
         throw new coding_exception('$questionorid parameter needs to be an integer or an object.');
     }
 
diff --git a/lib/tests/questionlib_test.php b/lib/tests/questionlib_test.php
index ced468bbfb2..ae1cd80c23c 100644
--- a/lib/tests/questionlib_test.php
+++ b/lib/tests/questionlib_test.php
@@ -1643,6 +1643,37 @@ class core_questionlib_testcase extends advanced_testcase {
         ];
     }
 
+    /**
+     * Tests that question_has_capability_on does not throw exception on broken questions.
+     */
+    public function test_question_has_capability_on_broken_question() {
+        global $DB;
+
+        // Create the test data.
+        $generator = $this->getDataGenerator();
+        $questiongenerator = $generator->get_plugin_generator('core_question');
+
+        $category = $generator->create_category();
+        $context = context_coursecat::instance($category->id);
+        $questioncat = $questiongenerator->create_question_category([
+            'contextid' => $context->id,
+        ]);
+
+        // Create a cloze question.
+        $question = $questiongenerator->create_question('multianswer', null, [
+            'category' => $questioncat->id,
+        ]);
+        // Now, break the question.
+        $DB->delete_records('question_multianswer', ['question' => $question->id]);
+
+        $this->setAdminUser();
+
+        $result = question_has_capability_on($question->id, 'tag');
+        $this->assertTrue($result);
+
+        $this->assertDebuggingCalled();
+    }
+
     /**
      * Tests for the deprecated question_has_capability_on function when passing a stdClass as parameter.
      *
diff --git a/mod/quiz/classes/question/bank/add_action_column.php b/mod/quiz/classes/question/bank/add_action_column.php
index 0e1d17cdf20..cf314b55f9b 100644
--- a/mod/quiz/classes/question/bank/add_action_column.php
+++ b/mod/quiz/classes/question/bank/add_action_column.php
@@ -52,8 +52,4 @@ class add_action_column extends \core_question\bank\action_column_base {
         }
         $this->print_icon('t/add', $this->stradd, $this->qbank->add_to_quiz_url($question->id));
     }
-
-    public function get_required_fields() {
-        return array('q.id');
-    }
 }
diff --git a/mod/quiz/tests/quiz_question_bank_view_test.php b/mod/quiz/tests/quiz_question_bank_view_test.php
new file mode 100644
index 00000000000..a0c6ef8a911
--- /dev/null
+++ b/mod/quiz/tests/quiz_question_bank_view_test.php
@@ -0,0 +1,75 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Unit tests for the quiz's own question bank view class.
+ *
+ * @package    mod_quiz
+ * @category   test
+ * @copyright  2018 the Open University
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+defined('MOODLE_INTERNAL') || die();
+
+global $CFG;
+require_once($CFG->dirroot . '/question/editlib.php');
+
+
+/**
+ * Unit tests for the quiz's own question bank view class.
+ *
+ * @copyright  2018 the Open University
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class quiz_question_bank_view_testcase extends advanced_testcase {
+
+    public function test_viewing_question_bank_should_not_load_individual_questions() {
+        $this->resetAfterTest();
+        $this->setAdminUser();
+        $generator = $this->getDataGenerator();
+        /** @var core_question_generator $questiongenerator */
+        $questiongenerator = $generator->get_plugin_generator('core_question');
+
+        // Create a course and a quiz.
+        $course = $generator->create_course();
+        $quiz = $this->getDataGenerator()->create_module('quiz', array('course' => $course->id));
+        $context = context_module::instance($quiz->cmid);
+        $cm = get_coursemodule_from_instance('quiz', $quiz->id);
+
+        // Create a question in the default category.
+        $contexts = new question_edit_contexts($context);
+        $cat = question_make_default_categories($contexts->all());
+        $questiondata = $questiongenerator->create_question('numerical', null,
+                ['name' => 'Example question', 'category' => $cat->id]);
+
+        // Ensure the question is not in the cache.
+        $cache = cache::make('core', 'questiondata');
+        $cache->delete($questiondata->id);
+
+        // Generate the view.
+        $view = new mod_quiz\question\bank\custom_view($contexts, new moodle_url('/'), $course, $cm, $quiz);
+        ob_start();
+        $view->display('editq', 0, 20, $cat->id . ',' . $cat->contextid, false, false, false);
+        $html = ob_get_clean();
+
+        // Verify the output includes the expected question.
+        $this->assertContains('Example question', $html);
+
+        // Verify the question has not been loaded into the cache.
+        $this->assertFalse($cache->has($questiondata->id));
+    }
+}
diff --git a/question/classes/bank/delete_action_column.php b/question/classes/bank/delete_action_column.php
index 7ef065e7ae1..ad17bb3e55c 100644
--- a/question/classes/bank/delete_action_column.php
+++ b/question/classes/bank/delete_action_column.php
@@ -51,6 +51,8 @@ class delete_action_column extends action_column_base {
     }
 
     public function get_required_fields() {
-        return array('q.id', 'q.hidden');
+        $required = parent::get_required_fields();
+        $required[] = 'q.hidden';
+        return $required;
     }
 }
diff --git a/question/classes/bank/preview_action_column.php b/question/classes/bank/preview_action_column.php
index f31d5cc359f..a81a83ca5bd 100644
--- a/question/classes/bank/preview_action_column.php
+++ b/question/classes/bank/preview_action_column.php
@@ -34,8 +34,4 @@ class preview_action_column extends action_column_base {
                     $question->id, $this->qbank->get_most_specific_context(), false);
         }
     }
-
-    public function get_required_fields() {
-        return array('q.id');
-    }
 }
diff --git a/question/engine/bank.php b/question/engine/bank.php
index 6721cbfc05b..68c6aaf1357 100644
--- a/question/engine/bank.php
+++ b/question/engine/bank.php
@@ -267,7 +267,7 @@ abstract class question_bank {
         global $DB;
 
         if (self::$testmode) {
-            // Evil, test code in production, but now way round it.
+            // Evil, test code in production, but no way round it.
             return self::return_test_question_data($questionid);
         }
 
diff --git a/question/tests/bank_view_test.php b/question/tests/bank_view_test.php
index c9987ffb9cd..0f4ea44c781 100644
--- a/question/tests/bank_view_test.php
+++ b/question/tests/bank_view_test.php
@@ -44,7 +44,7 @@ class core_question_bank_view_testcase extends advanced_testcase {
         /** @var core_question_generator $questiongenerator */
         $questiongenerator = $generator->get_plugin_generator('core_question');
 
-        // Cerate a course.
+        // Create a course.
         $course = $generator->create_course();
         $context = context_course::instance($course->id);
 
@@ -54,7 +54,7 @@ class core_question_bank_view_testcase extends advanced_testcase {
         $questiondata = $questiongenerator->create_question('numerical', null,
                 ['name' => 'Example question', 'category' => $cat->id]);
 
-        // Ensure the qusetion is not in the cache.
+        // Ensure the question is not in the cache.
         $cache = cache::make('core', 'questiondata');
         $cache->delete($questiondata->id);
 
@@ -67,7 +67,7 @@ class core_question_bank_view_testcase extends advanced_testcase {
         // Verify the output includes the expected question.
         $this->assertContains('Example question', $html);
 
-        // Verify the qusetion has not been loaded into the cache.
+        // Verify the question has not been loaded into the cache.
         $this->assertFalse($cache->has($questiondata->id));
     }
 }