diff --git a/odoo/addons/test_testing_utilities/menu.xml b/odoo/addons/test_testing_utilities/menu.xml
index 0bf87b6d5f5..e20c740e8c8 100644
--- a/odoo/addons/test_testing_utilities/menu.xml
+++ b/odoo/addons/test_testing_utilities/menu.xml
@@ -152,6 +152,30 @@
         </field>
     </record>
 
+    <record id="m2m_change_view" model="ir.ui.view">
+        <field name="name">M2M Change View</field>
+        <field name="model">test_testing_utilities.f</field>
+        <field name="arch" type="xml">
+            <form>
+                <field name="m2o"/>
+                <field name="m2m" nolabel="1">
+                    <tree>
+                        <field name="name"/>
+                        <field name="m2o_ids" widget="many2many_tags"/>
+                    </tree>
+                    <form>
+                        <field name="name"/>
+                        <field name="m2o_ids">
+                            <tree>
+                                <field name="name"/>
+                            </tree>
+                        </field>
+                    </form>
+                </field>
+            </form>
+        </field>
+    </record>
+
     <record id="o2m_recursive_relation_view" model="ir.ui.view">
         <field name="name">Recursive Relation Test View</field>
         <field name="model">test_testing_utilities.recursive</field>
diff --git a/odoo/addons/test_testing_utilities/models.py b/odoo/addons/test_testing_utilities/models.py
index 8796526653a..aa79117e0b0 100644
--- a/odoo/addons/test_testing_utilities/models.py
+++ b/odoo/addons/test_testing_utilities/models.py
@@ -103,6 +103,7 @@ class M2MSub(models.Model):
     _description = 'Testing Utilities Subtraction 2'
 
     name = fields.Char()
+    m2o_ids = fields.Many2many('test_testing_utilities.m2o')
 
 class M2MChange2(models.Model):
     _name = 'test_testing_utilities.f'
diff --git a/odoo/addons/test_testing_utilities/tests/test_form_impl.py b/odoo/addons/test_testing_utilities/tests/test_form_impl.py
index ab846bda87e..d43051637f7 100644
--- a/odoo/addons/test_testing_utilities/tests/test_form_impl.py
+++ b/odoo/addons/test_testing_utilities/tests/test_form_impl.py
@@ -227,10 +227,13 @@ class TestM2M(TransactionCase):
         self.assertEqual(f.count, 1)
 
     def test_m2m_changed(self):
+        r1 = self.env['test_testing_utilities.m2o'].create({'name': "A"})
+        r2 = self.env['test_testing_utilities.m2o'].create({'name': "B"})
+
         Sub = self.env['test_testing_utilities.sub2']
         a = Sub.create({'name': 'a'})
         b = Sub.create({'name': 'b'})
-        c = Sub.create({'name': 'c'})
+        c = Sub.create({'name': 'c', 'm2o_ids': [(6, 0, [r1.id, r2.id])]})
         d = Sub.create({'name': 'd'})
 
         f = Form(self.env['test_testing_utilities.f'])
diff --git a/odoo/tests/common.py b/odoo/tests/common.py
index 1074b116554..df1b5409232 100644
--- a/odoo/tests/common.py
+++ b/odoo/tests/common.py
@@ -2108,7 +2108,9 @@ class Form(object):
             else:
                 ids = list(current[0][2])
             for command in value:
-                if command[0] == 3:
+                if command[0] == 1:
+                    ids.append(command[1])
+                elif command[0] == 3:
                     ids.remove(command[1])
                 elif command[0] == 4:
                     ids.append(command[1])