diff --git a/addons/event_sale/static/src/js/event_configurator_widget.js b/addons/event_sale/static/src/js/event_configurator_widget.js
index ea7a5899389..5bbdb3e7033 100644
--- a/addons/event_sale/static/src/js/event_configurator_widget.js
+++ b/addons/event_sale/static/src/js/event_configurator_widget.js
@@ -113,7 +113,7 @@ ProductConfiguratorWidget.include({
         this.do_action('event_sale.event_configurator_action', {
             additional_context: data,
             on_close: function (result) {
-                if (result && result !== 'special') {
+                if (result && !result.special) {
                     self.trigger_up('field_changed', {
                         dataPointID: dataPointId,
                         changes: result.eventConfiguration,
diff --git a/addons/mail/static/tests/activity_tests.js b/addons/mail/static/tests/activity_tests.js
index 8134e6699f5..6c3c297ba5a 100644
--- a/addons/mail/static/tests/activity_tests.js
+++ b/addons/mail/static/tests/activity_tests.js
@@ -457,5 +457,64 @@ QUnit.test('activity view: search more to schedule an activity for a record of a
     activity.destroy();
 });
 
+QUnit.test('Activity view: discard an activity creation dialog', async function (assert) {
+    assert.expect(2);
+
+    var actionManager = await createActionManager({
+        actions: [{
+            id: 1,
+            name: 'Task Action',
+            res_model: 'task',
+            type: 'ir.actions.act_window',
+            views: [[false, 'activity']],
+        }],
+        archs: {
+            'task,false,activity': `
+                <activity string="Task">
+                    <templates>
+                        <div t-name="activity-box">
+                            <field name="foo"/>
+                        </div>
+                    </templates>
+                </activity>`,
+            'task,false,search': '<search></search>',
+            'mail.activity,false,form': `
+                <form>
+                    <field name="display_name"/>
+                    <footer>
+                        <button string="Discard" class="btn-secondary" special="cancel"/>
+                    </footer>
+                </form>`
+        },
+        data: this.data,
+        intercepts: {
+            do_action(ev) {
+                actionManager.doAction(ev.data.action, ev.data.options);
+            }
+        },
+        async mockRPC(route, args) {
+            if (args.method === 'check_access_rights') {
+                return true;
+            }
+            return this._super(...arguments);
+        },
+    });
+    await actionManager.doAction(1);
+
+    await testUtils.dom.click(actionManager.$('.o_activity_view .o_data_row .o_activity_empty_cell')[0]);
+    assert.containsOnce(
+        $,
+        '.modal.o_technical_modal.show',
+        "Activity Modal should be opened");
+
+    await testUtils.dom.click($('.modal.o_technical_modal.show button[special="cancel"]'));
+    assert.containsNone(
+        $,
+        '.modal.o_technical_modal.show',
+        "Activity Modal should be closed");
+
+    actionManager.destroy();
+});
+
 });
 });
diff --git a/addons/sale_product_configurator/static/src/js/product_configurator_widget.js b/addons/sale_product_configurator/static/src/js/product_configurator_widget.js
index e10cc7c8898..cf3c4730e26 100644
--- a/addons/sale_product_configurator/static/src/js/product_configurator_widget.js
+++ b/addons/sale_product_configurator/static/src/js/product_configurator_widget.js
@@ -149,7 +149,7 @@ ProductConfiguratorWidget.include({
         this.do_action('sale_product_configurator.sale_product_configurator_action', {
             additional_context: data,
             on_close: function (result) {
-                if (result && result !== 'special') {
+                if (result && !result.special) {
                     self._addProducts(result, dataPointId);
                 } else {
                     // is this restoreProductTemplateId ability useful ???
diff --git a/addons/stock/static/src/js/inventory_validate_button_controller.js b/addons/stock/static/src/js/inventory_validate_button_controller.js
index ac5367b8d25..3e6899ae0c7 100644
--- a/addons/stock/static/src/js/inventory_validate_button_controller.js
+++ b/addons/stock/static/src/js/inventory_validate_button_controller.js
@@ -64,7 +64,7 @@ var InventoryValidationController = ListController.extend({
                 var exitCallback = function (infos) {
                     // In case we discarded a wizard, we do nothing to stay on
                     // the same view...
-                    if (infos === 'special') {
+                    if (infos && infos.special) {
                         return;
                     }
                     // ... but in any other cases, we go back on the inventory form.
diff --git a/addons/web/static/src/js/chrome/action_manager_act_window.js b/addons/web/static/src/js/chrome/action_manager_act_window.js
index 6027e21bb42..8034a8e54b8 100644
--- a/addons/web/static/src/js/chrome/action_manager_act_window.js
+++ b/addons/web/static/src/js/chrome/action_manager_act_window.js
@@ -616,7 +616,10 @@ ActionManager.include({
 
         // determine the action to execute according to the actionData
         if (actionData.special) {
-            def = Promise.resolve({type: 'ir.actions.act_window_close', infos: 'special'});
+            def = Promise.resolve({
+                type: 'ir.actions.act_window_close',
+                infos: { special: true },
+            });
         } else if (actionData.type === 'object') {
             // call a Python Object method, which may return an action to execute
             var args = recordID ? [[recordID]] : [env.resIDs];