diff --git a/availability/tests/behat/edit_availability.feature b/availability/tests/behat/edit_availability.feature
index c5e1aa032d8..b7d18668ce2 100644
--- a/availability/tests/behat/edit_availability.feature
+++ b/availability/tests/behat/edit_availability.feature
@@ -264,3 +264,16 @@ Feature: edit_availability
     And I should not see "Content"
     And I should see "Collapse all"
     And I should not see "Expand all"
+
+  @javascript
+  Scenario: Edit activity availability button is shown after duplicating an activity
+    # Setting a restriction up
+    Given I am on the "MyForum" "forum activity editing" page logged in as teacher1
+    And I expand all fieldsets
+    And I press "Add restriction..."
+    And I click on "Date" "button" in the "Add restriction..." "dialogue"
+    When I press "Save and return to course"
+    And I turn editing mode on
+    And I duplicate "MyForum" activity
+    # Testing edit restrictions link
+    Then "Edit restrictions" "link" should exist in the "MyForum (copy)" "core_availability > Activity availability"
diff --git a/course/format/classes/output/local/content/cm.php b/course/format/classes/output/local/content/cm.php
index 89063a63937..ed237ef40ba 100644
--- a/course/format/classes/output/local/content/cm.php
+++ b/course/format/classes/output/local/content/cm.php
@@ -107,6 +107,8 @@ class cm implements named_templatable, renderable {
      * @return stdClass data context for a mustache template
      */
     public function export_for_template(renderer_base $output): stdClass {
+        global $PAGE;
+
         $mod = $this->mod;
         $displayoptions = $this->displayoptions;
 
@@ -118,6 +120,7 @@ class cm implements named_templatable, renderable {
             'textclasses' => $displayoptions['textclasses'],
             'classlist' => [],
             'cmid' => $mod->id,
+            'editing' => $PAGE->user_is_editing(),
         ];
 
         // Add partial data segments.